diff --git a/frontend/src/App.svelte b/frontend/src/App.svelte
index 455c765..82e7153 100644
--- a/frontend/src/App.svelte
+++ b/frontend/src/App.svelte
@@ -101,6 +101,7 @@
     sectionFromPath,
     supportTicketIdFromPath,
     syncSectionPath,
+    withRoutePrefix,
   } from "./lib/webapp/routes.js";
 
   export let mockRuntime = null;
@@ -125,6 +126,8 @@
   const MOCK_SOURCE = mockRuntime?.source || EMPTY_MOCK;
   const previewBoardComponent = mockRuntime?.PreviewBoard || null;
   const isDocsDemo = mockRuntime?.docsDemo === true;
+  const routePrefix = isDocsDemo ? "/demo/runtime" : "";
+  let docsDemoParentRouteConsumed = false;
   const query = new URLSearchParams(window.location.search);
   const isAppLaunchRoute = isExternalAppLaunchPath(window.location.pathname);
   mockRuntime?.applyPreviewMock?.(query.get("mock"));
@@ -257,7 +260,7 @@
     telegramSdk,
   });
   const devicesStore = createDevicesStore({ api, t, showToast });
-  const supportStore = createSupportStore({ api, t, showToast });
+  const supportStore = createSupportStore({ api, t, showToast, routePrefix });
   const installGuidesStore = createInstallGuidesStore({ api, t, showToast });
   const accountStore = createAccountStore({
     api,
@@ -773,7 +776,7 @@
       const section =
         isDocsDemo && currentQuery.get("screen")
           ? normalizeSection(currentQuery.get("screen"))
-          : sectionFromPath(window.location.pathname);
+          : sectionFromPath(routePathnameFromLocation(), routePrefix);
       if (mode === "login") {
         setPasswordLoginMode(isPasswordLoginPath(), true);
         screen = "login";
@@ -783,11 +786,11 @@
         if (section === "admin" && isAdmin) {
           adminActiveSection = isDocsDemo
             ? initialAdminSectionFromLocation()
-            : adminSectionFromPath(window.location.pathname);
+            : adminSectionFromPath(routePathnameFromLocation(), routePrefix);
           const pathAtStart = window.location.pathname;
           void Promise.all([ensureI18nScope("admin"), ensureAdminBundle()])
             .then(() => {
-              if (sectionFromPath(window.location.pathname) !== "admin") return;
+              if (sectionFromPath(routePathnameFromLocation(), routePrefix) !== "admin") return;
               if (window.location.pathname !== pathAtStart) return;
               activeTab = "settings";
               screen = "admin";
@@ -1038,39 +1041,95 @@
     return new URLSearchParams(window.location.search);
   }
 
+  function docsDemoParentSearchParams() {
+    if (!isDocsDemo) return null;
+    try {
+      if (window.parent === window) return null;
+      return new URLSearchParams(window.parent.location.search);
+    } catch (_error) {
+      return null;
+    }
+  }
+
+  function normalizeDemoRoutePath(value) {
+    const raw = String(value || "").trim();
+    if (!raw) return "";
+    const withSlash = raw.startsWith("/") ? raw : `/${raw}`;
+    return withSlash.replace(/\/{2,}/g, "/").replace(/\/+$/, "") || "/";
+  }
+
+  function docsDemoRouteParams() {
+    if (!isDocsDemo) return null;
+    const currentQuery = currentSearchParams();
+    const currentParams = {
+      path: currentQuery.get("path") || "",
+      screen: currentQuery.get("screen") || "",
+      adminSection: currentQuery.get("admin_section") || "",
+    };
+    if (currentParams.path || currentParams.screen || currentParams.adminSection) {
+      return currentParams;
+    }
+    if (docsDemoParentRouteConsumed) return currentParams;
+    const parentQuery = docsDemoParentSearchParams();
+    return {
+      path: parentQuery?.get("path") || "",
+      screen: parentQuery?.get("screen") || "",
+      adminSection: parentQuery?.get("admin_section") || "",
+    };
+  }
+
+  function docsDemoRoutePathFromParams() {
+    const params = docsDemoRouteParams();
+    if (!params) return "";
+    const explicitPath = normalizeDemoRoutePath(params.path);
+    if (explicitPath) return explicitPath;
+    const section = normalizeSection(params.screen);
+    if (section === "admin") {
+      return `/admin/${normalizeAdminSection(params.adminSection || "stats")}`;
+    }
+    return params.screen ? `/${section}` : "";
+  }
+
+  function routePathnameFromLocation() {
+    return docsDemoRoutePathFromParams() || window.location.pathname;
+  }
+
+  function cleanDocsDemoRouteQuery() {
+    if (!isDocsDemo || window.location.protocol === "file:") return;
+    const url = new URL(window.location.href);
+    const routeKeys = ["path", "screen", "admin_section"];
+    const changed = routeKeys.some((key) => url.searchParams.has(key));
+    if (!changed) return;
+    for (const key of routeKeys) url.searchParams.delete(key);
+    const search = url.searchParams.toString();
+    window.history.replaceState(
+      null,
+      "",
+      `${url.pathname}${search ? `?${search}` : ""}${url.hash}`
+    );
+  }
+
   function initialAdminSectionFromLocation() {
     const currentQuery = currentSearchParams();
     if (MOCK && currentQuery.get("admin_section")) {
       return normalizeAdminSection(currentQuery.get("admin_section"));
     }
-    return adminSectionFromPath(window.location.pathname);
+    const demoRouteParams = docsDemoRouteParams();
+    if (MOCK && demoRouteParams?.adminSection) {
+      return normalizeAdminSection(demoRouteParams.adminSection);
+    }
+    return adminSectionFromPath(routePathnameFromLocation(), routePrefix);
   }
 
-  function syncDocsDemoSection(section, replace = false, adminSection = null) {
+  function syncDocsDemoSection(section, replace = false, adminSection = null, adminUserId = null) {
     if (!isDocsDemo || window.location.protocol === "file:") return false;
-    const normalized = normalizeSection(section);
-    const currentQuery = currentSearchParams();
-    currentQuery.set("screen", normalized);
-    if (normalized === "admin") {
-      currentQuery.set(
-        "admin_section",
-        normalizeAdminSection(
-          adminSection || adminActiveSection || initialAdminSectionFromLocation()
-        )
-      );
-    } else {
-      currentQuery.delete("admin_section");
-    }
-    const nextSearch = currentQuery.toString();
-    const nextUrl = `${window.location.pathname}${nextSearch ? `?${nextSearch}` : ""}${window.location.hash}`;
-    if (nextUrl !== `${window.location.pathname}${window.location.search}${window.location.hash}`) {
-      window.history[replace ? "replaceState" : "pushState"](null, "", nextUrl);
-    }
+    syncSectionPath(section, replace, adminSection, adminUserId, routePrefix);
+    cleanDocsDemoRouteQuery();
     return true;
   }
 
   function syncAppSectionPath(section, replace = false, adminSection = null, adminUserId = null) {
-    if (syncDocsDemoSection(section, replace, adminSection)) return;
+    if (syncDocsDemoSection(section, replace, adminSection, adminUserId)) return;
     syncSectionPath(section, replace, adminSection, adminUserId);
   }
 
@@ -1079,14 +1138,15 @@
     onClose: closeAdminPanel,
     onToast: (text) => showToast(text),
     initialSection: screen === "admin" ? adminActiveSection : initialAdminSectionFromLocation(),
-    initialPaymentId: adminPaymentIdFromPath(window.location.pathname),
-    initialPaymentUserId: adminPaymentsUserIdFromPath(window.location.pathname),
-    initialUserId: adminUserIdFromPath(window.location.pathname),
+    initialPaymentId: adminPaymentIdFromPath(routePathnameFromLocation(), routePrefix),
+    initialPaymentUserId: adminPaymentsUserIdFromPath(routePathnameFromLocation(), routePrefix),
+    initialUserId: adminUserIdFromPath(routePathnameFromLocation(), routePrefix),
     onSectionChange: handleAdminSectionChange,
     onSettingsSaved: handleAdminPersistedSaved,
     onTariffsSaved: handleAdminPersistedSaved,
     onThemesSaved: handleAdminPersistedSaved,
     onTranslationsSaved: handleAdminTranslationsSaved,
+    routePrefix,
     brandTitle,
     brand,
     appFaviconUrl: CFG.faviconUrl,
@@ -1231,7 +1291,7 @@
       ? preservedSection
       : MOCK && currentQuery.get("screen")
         ? normalizeSection(currentQuery.get("screen"))
-        : sectionFromPath(window.location.pathname);
+        : sectionFromPath(routePathnameFromLocation(), routePrefix);
     if (section === "admin" && !payload.user?.is_admin) section = "settings";
     if (section === "devices" && !payload.settings?.my_devices_enabled) section = "home";
     if (section === "support" && payload.settings?.support_tickets_enabled === false) {
@@ -1258,7 +1318,10 @@
       }
     }
     const initialSupportTicketId =
-      section === "support" ? supportTicketIdFromPath(window.location.pathname) : null;
+      section === "support"
+        ? supportTicketIdFromPath(routePathnameFromLocation(), routePrefix)
+        : null;
+    if (isDocsDemo) docsDemoParentRouteConsumed = true;
     activeTab =
       section === "admin"
         ? "settings"
@@ -1275,10 +1338,8 @@
       }
       supportStore.startPolling({ includeList: false });
     }
-    if (isDocsDemo) {
-      // The docs demo is a static iframe route; keep query params as its navigation contract.
-    } else if (section === "support" && initialSupportTicketId) {
-      const targetPath = `/support/${initialSupportTicketId}`;
+    if (section === "support" && initialSupportTicketId) {
+      const targetPath = withRoutePrefix(`/support/${initialSupportTicketId}`, routePrefix);
       if (window.location.protocol !== "file:" && window.location.pathname !== targetPath) {
         window.history.replaceState(
           null,
@@ -1286,6 +1347,7 @@
           `${targetPath}${window.location.search}${window.location.hash}`
         );
       }
+      cleanDocsDemoRouteQuery();
     } else {
       syncAppSectionPath(section, true, initialAdminSection);
     }
@@ -1710,7 +1772,7 @@
     clearLanguageClickGuard();
     billingStore.closePaymentModal();
     const nextAdminSection = normalizeAdminSection(
-      adminActiveSection || adminSectionFromPath(window.location.pathname)
+      adminActiveSection || adminSectionFromPath(routePathnameFromLocation(), routePrefix)
     );
     try {
       await ensureI18nScope("admin");
@@ -1737,20 +1799,7 @@
     const nextAdminSection = normalizeAdminSection(adminSection);
     adminActiveSection = nextAdminSection;
     if (window.location.protocol === "file:") return;
-    if (isDocsDemo) {
-      syncDocsDemoSection("admin", false, nextAdminSection);
-      return;
-    }
-    const targetPath =
-      nextAdminSection === "users" && adminUserId
-        ? `/admin/users/${adminUserId}`
-        : `/admin/${nextAdminSection}`;
-    if (window.location.pathname === targetPath) return;
-    window.history.pushState(
-      null,
-      "",
-      `${targetPath}${window.location.search}${window.location.hash}`
-    );
+    syncAppSectionPath("admin", false, nextAdminSection, adminUserId);
   }
 
   function adminPayloadHasLogoChange(options = {}) {
diff --git a/frontend/src/admin/AdminPanel.svelte b/frontend/src/admin/AdminPanel.svelte
index 67a48c9..f7d7d53 100644
--- a/frontend/src/admin/AdminPanel.svelte
+++ b/frontend/src/admin/AdminPanel.svelte
@@ -77,6 +77,7 @@
     userTelegramProfileLink,
     userTelegramProfileLinkKind,
   } from "../lib/admin/users.js";
+  import { stripRoutePrefix } from "../lib/webapp/routes.js";
 
   export let api;
   export let onClose = () => {};
@@ -90,6 +91,7 @@
   export let onTariffsSaved = () => {};
   export let onThemesSaved = () => {};
   export let onTranslationsSaved = () => {};
+  export let routePrefix = "";
   export let brand = {};
   export let brandTitle = "/minishop";
   export let appFaviconUrl = "";
@@ -243,15 +245,15 @@
   const backupsStore = createBackupsStore({ api, onToast: flash, at });
   const broadcastStore = createBroadcastStore({ api, onToast: flash, at });
   const logsStore = createLogsStore({ api, at });
-  const paymentsStore = createPaymentsStore({ api, onToast: flash, at });
+  const paymentsStore = createPaymentsStore({ api, onToast: flash, at, routePrefix });
   const promosStore = createPromosStore({ api, onToast: flash, at });
   const settingsStore = createSettingsStore({ api, onToast: flash, at });
   const statsStore = createStatsStore({ api, onToast: flash, at });
-  const supportStore = createAdminSupportStore({ api, onToast: flash, at });
+  const supportStore = createAdminSupportStore({ api, onToast: flash, at, routePrefix });
   const tariffsStore = createTariffsStore({ api, onToast: flash, onTariffsSaved, flash, at });
   const themesStore = createThemesStore({ api, onThemesSaved, flash, at });
   const translationsStore = createTranslationsStore({ api, onToast: flash, at });
-  const usersStore = createUsersStore({ api, onToast: flash, at });
+  const usersStore = createUsersStore({ api, onToast: flash, at, routePrefix });
 
   setContext("promosStore", promosStore);
   setContext("adsStore", adsStore);
@@ -296,33 +298,38 @@
     onLanguageChange(value, { section: "admin", adminSection: active });
   }
 
+  function currentRoutePathname() {
+    if (typeof window === "undefined") return "/";
+    return stripRoutePrefix(window.location.pathname, routePrefix);
+  }
+
   function readSectionFromPath() {
     if (typeof window === "undefined") return "stats";
-    const match = window.location.pathname.match(/^\/admin\/([a-z0-9_-]+)(?:\/.*)?$/i);
+    const match = currentRoutePathname().match(/^\/admin\/([a-z0-9_-]+)(?:\/.*)?$/i);
     return normalizeSection(match ? match[1].toLowerCase() : "stats");
   }
 
   function readUserIdFromPath() {
     if (typeof window === "undefined") return null;
-    const match = window.location.pathname.match(/^\/admin\/users\/(-?\d+)$/);
+    const match = currentRoutePathname().match(/^\/admin\/users\/(-?\d+)$/);
     return match ? Number(match[1]) : null;
   }
 
   function readSupportTicketIdFromPath() {
     if (typeof window === "undefined") return null;
-    const match = window.location.pathname.match(/^\/admin\/support\/(\d+)$/);
+    const match = currentRoutePathname().match(/^\/admin\/support\/(\d+)$/);
     return match ? Number(match[1]) : null;
   }
 
   function readPaymentIdFromPath() {
     if (typeof window === "undefined") return null;
-    const match = window.location.pathname.match(/^\/admin\/payments\/(\d+)$/);
+    const match = currentRoutePathname().match(/^\/admin\/payments\/(\d+)$/);
     return match ? Number(match[1]) : null;
   }
 
   function readPaymentUserIdFromPath() {
     if (typeof window === "undefined") return null;
-    const match = window.location.pathname.match(/^\/admin\/payments\/users\/(-?\d+)$/);
+    const match = currentRoutePathname().match(/^\/admin\/payments\/users\/(-?\d+)$/);
     return match ? Number(match[1]) : null;
   }
 
@@ -377,10 +384,26 @@
       paymentsStore.closePayment({ skipPush: true });
       onSectionChange(next);
     }
+    usersStore.setActive(next);
     paymentsStore.closePayment({ skipPush: true });
     usersStore.openUser(uid, { pathContext: "payments" });
   }
 
+  function openUserCard(userId) {
+    const uid = Number(userId);
+    if (!Number.isFinite(uid) || uid === 0) return;
+    const next = normalizeSection("users");
+    sidebarOpen = false;
+    if (active !== next) {
+      active = next;
+      paymentsStore.closePayment({ skipPush: true });
+      supportStore.closeTicketView({ skipPush: true });
+      onSectionChange(next, uid);
+    }
+    usersStore.setActive(next);
+    usersStore.openUser(uid);
+  }
+
   function resolvedAvatarUrl(user) {
     return userAvatarUrl(user) || (user?.email ? gravatarCache.gravatarUrl(user.email) : "");
   }
@@ -786,6 +809,7 @@
               {at}
               {brand}
               {resolvedAvatarUrl}
+              onOpenUserCard={openUserCard}
               initialTicketId={readSupportTicketIdFromPath()}
             />
           {/if}
diff --git a/frontend/src/admin/sections/SupportSection.svelte b/frontend/src/admin/sections/SupportSection.svelte
index a6cab42..86a8366 100644
--- a/frontend/src/admin/sections/SupportSection.svelte
+++ b/frontend/src/admin/sections/SupportSection.svelte
@@ -17,6 +17,7 @@
   export let initialTicketId = null;
   export let brand = {};
   export let resolvedAvatarUrl = () => "";
+  export let onOpenUserCard = () => {};
 
   const supportStore = getContext("adminSupportStore");
   let reply = "";
@@ -306,7 +307,12 @@
         onPatch={(updates) => supportStore.patchTicket(updates)}
         onClose={() => supportStore.closeTicket()}
       />
-      <SupportUserContextPanel ticket={openedTicket} snapshot={userSnapshot} {at} />
+      <SupportUserContextPanel
+        ticket={openedTicket}
+        snapshot={userSnapshot}
+        {at}
+        onOpenUser={onOpenUserCard}
+      />
       <ScrollArea
         bind:element={messagesScrollEl}
         maxHeight="none"
diff --git a/frontend/src/lib/admin/stores/paymentsStore.js b/frontend/src/lib/admin/stores/paymentsStore.js
index e1f495e..dc05297 100644
--- a/frontend/src/lib/admin/stores/paymentsStore.js
+++ b/frontend/src/lib/admin/stores/paymentsStore.js
@@ -1,9 +1,11 @@
 import { writable } from "svelte/store";
+import { withRoutePrefix } from "../../webapp/routes.js";
 
 export function createPaymentsStore({
   api,
   onToast = () => {},
   at = (key, _params, fallback) => fallback || key,
+  routePrefix = "",
 }) {
   const state = writable({
     payments: [],
@@ -25,7 +27,10 @@ export function createPaymentsStore({
   function pushPaymentPath(paymentId) {
     if (typeof window === "undefined" || window.location.protocol === "file:") return;
     if (active !== "payments") return;
-    const target = paymentId ? `/admin/payments/${paymentId}` : "/admin/payments";
+    const target = withRoutePrefix(
+      paymentId ? `/admin/payments/${paymentId}` : "/admin/payments",
+      routePrefix
+    );
     if (window.location.pathname === target) return;
     window.history.pushState(null, "", `${target}${window.location.search}${window.location.hash}`);
   }
diff --git a/frontend/src/lib/admin/stores/supportStore.js b/frontend/src/lib/admin/stores/supportStore.js
index 1528b64..6de6de8 100644
--- a/frontend/src/lib/admin/stores/supportStore.js
+++ b/frontend/src/lib/admin/stores/supportStore.js
@@ -1,6 +1,7 @@
 import { writable } from "svelte/store";
+import { withRoutePrefix } from "../../webapp/routes.js";
 
-export function createAdminSupportStore({ api, onToast, at }) {
+export function createAdminSupportStore({ api, onToast, at, routePrefix = "" }) {
   const OPEN_TICKET_POLL_MS = 3_000;
   const STATS_POLL_MS = 30_000;
   const HIDDEN_POLL_MS = 300_000;
@@ -58,7 +59,10 @@ export function createAdminSupportStore({ api, onToast, at }) {
   function pushTicketPath(ticketId) {
     if (typeof window === "undefined" || window.location.protocol === "file:") return;
     if (active !== "support") return;
-    const target = ticketId ? `/admin/support/${ticketId}` : "/admin/support";
+    const target = withRoutePrefix(
+      ticketId ? `/admin/support/${ticketId}` : "/admin/support",
+      routePrefix
+    );
     if (window.location.pathname !== target) {
       window.history.pushState(
         null,
diff --git a/frontend/src/lib/admin/stores/usersStore.js b/frontend/src/lib/admin/stores/usersStore.js
index ae4d89b..4e58ad7 100644
--- a/frontend/src/lib/admin/stores/usersStore.js
+++ b/frontend/src/lib/admin/stores/usersStore.js
@@ -1,6 +1,7 @@
 import { writable } from "svelte/store";
+import { withRoutePrefix } from "../../webapp/routes.js";
 
-export function createUsersStore({ api, onToast, at }) {
+export function createUsersStore({ api, onToast, at, routePrefix = "" }) {
   const USERS_PAGE_SIZE = 25;
   const USER_LOGS_PAGE_SIZE = 20;
 
@@ -70,6 +71,7 @@ export function createUsersStore({ api, onToast, at }) {
       target = userId ? `/admin/payments/users/${userId}` : `/admin/payments`;
     }
     if (!target) return;
+    target = withRoutePrefix(target, routePrefix);
     if (window.location.pathname === target) return;
     window.history.pushState(null, "", `${target}${window.location.search}${window.location.hash}`);
   }
diff --git a/frontend/src/lib/components/patterns/admin/SupportUserContextPanel.svelte b/frontend/src/lib/components/patterns/admin/SupportUserContextPanel.svelte
index 43927d2..d68c7bd 100644
--- a/frontend/src/lib/components/patterns/admin/SupportUserContextPanel.svelte
+++ b/frontend/src/lib/components/patterns/admin/SupportUserContextPanel.svelte
@@ -5,6 +5,7 @@
   export let ticket;
   export let snapshot = {};
   export let at = (key) => key;
+  export let onOpenUser = () => {};
 
   $: user = ticket?.user || {};
   $: displayName = snapshot?.name || user.username || user.email || user.user_id || "-";
@@ -65,7 +66,7 @@
       variant="ghost"
       size="icon"
       disabled={!canOpenUser}
-      onclick={() => (window.location.href = `/admin/users/${user.user_id}`)}
+      onclick={() => onOpenUser(user.user_id)}
       aria-label={at("support_open_user", {}, "Карточка")}
       title={at("support_open_user", {}, "Карточка")}
     >
diff --git a/frontend/src/lib/webapp/routes.js b/frontend/src/lib/webapp/routes.js
index 1c85c7c..2c69574 100644
--- a/frontend/src/lib/webapp/routes.js
+++ b/frontend/src/lib/webapp/routes.js
@@ -25,15 +25,41 @@ export function normalizeAdminSection(value) {
   return ADMIN_SECTIONS.has(section) ? section : "stats";
 }
 
-export function sectionFromPath(pathname) {
+function normalizePathname(pathname) {
+  const normalized = String(pathname || "")
+    .trim()
+    .replace(/\/+$/, "");
+  return normalized || "/";
+}
+
+export function stripRoutePrefix(pathname, routePrefix = "") {
+  const path = normalizePathname(pathname);
+  const prefix = normalizePathname(routePrefix);
+  if (prefix === "/") return path;
+  if (path.toLowerCase() === prefix.toLowerCase()) return "/";
+  if (path.toLowerCase().startsWith(`${prefix.toLowerCase()}/`)) {
+    return path.slice(prefix.length) || "/";
+  }
+  return path;
+}
+
+export function withRoutePrefix(pathname, routePrefix = "") {
+  const path = normalizePathname(pathname);
+  const prefix = normalizePathname(routePrefix);
+  if (prefix === "/") return path;
+  if (path === "/") return prefix;
+  return `${prefix}${path}`;
+}
+
+export function sectionFromPath(pathname, routePrefix = "") {
   const normalizedPath = String(pathname || "")
     .trim()
-    .toLowerCase()
     .replace(/\/+$/, "");
-  if (!normalizedPath || normalizedPath === "/") return "home";
-  if (normalizedPath === "/admin" || normalizedPath.startsWith("/admin/")) return "admin";
-  if (normalizedPath === "/support" || normalizedPath.startsWith("/support/")) return "support";
-  const section = normalizedPath.startsWith("/") ? normalizedPath.slice(1) : normalizedPath;
+  const routePath = stripRoutePrefix(normalizedPath, routePrefix).toLowerCase().replace(/\/+$/, "");
+  if (!routePath || routePath === "/") return "home";
+  if (routePath === "/admin" || routePath.startsWith("/admin/")) return "admin";
+  if (routePath === "/support" || routePath.startsWith("/support/")) return "support";
+  const section = routePath.startsWith("/") ? routePath.slice(1) : routePath;
   return normalizeSection(section);
 }
 
@@ -45,67 +71,68 @@ export function publicInstallTokenFromPath(pathname) {
   return match ? match[1].toLowerCase() : "";
 }
 
-export function adminSectionFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function adminSectionFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/admin\/([a-z0-9_-]+)(?:\/.*)?$/);
   return normalizeAdminSection(m ? m[1] : "");
 }
 
-export function adminUserIdFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function adminUserIdFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/admin\/users\/(-?\d+)$/);
   return m ? Number(m[1]) : null;
 }
 
-export function adminPaymentIdFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function adminPaymentIdFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/admin\/payments\/(\d+)$/);
   return m ? Number(m[1]) : null;
 }
 
-export function adminPaymentsUserIdFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function adminPaymentsUserIdFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/admin\/payments\/users\/(-?\d+)$/);
   return m ? Number(m[1]) : null;
 }
 
-export function supportTicketIdFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function supportTicketIdFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/support\/(\d+)$/);
   return m ? Number(m[1]) : null;
 }
 
-export function adminSupportTicketIdFromPath(pathname) {
-  const normalized = String(pathname || "")
-    .toLowerCase()
-    .replace(/\/+$/, "");
+export function adminSupportTicketIdFromPath(pathname, routePrefix = "") {
+  const normalized = stripRoutePrefix(pathname, routePrefix).toLowerCase().replace(/\/+$/, "");
   const m = normalized.match(/^\/admin\/support\/(\d+)$/);
   return m ? Number(m[1]) : null;
 }
 
-export function syncSectionPath(section, replace = false, adminSection = null, adminUserId = null) {
+export function syncSectionPath(
+  section,
+  replace = false,
+  adminSection = null,
+  adminUserId = null,
+  routePrefix = ""
+) {
   if (window.location.protocol === "file:") return;
   const normalized = normalizeSection(section);
   let targetPath = APP_SECTION_PATHS[normalized] || APP_SECTION_PATHS.home;
   if (normalized === "admin") {
-    const adm = adminSection || adminSectionFromPath(window.location.pathname) || "stats";
+    const adm =
+      adminSection || adminSectionFromPath(window.location.pathname, routePrefix) || "stats";
     const uid =
-      adminUserId ?? (adm === "users" ? adminUserIdFromPath(window.location.pathname) : null);
+      adminUserId ??
+      (adm === "users" ? adminUserIdFromPath(window.location.pathname, routePrefix) : null);
     const supportTicketId =
-      adm === "support" ? adminSupportTicketIdFromPath(window.location.pathname) : null;
-    const paymentId = adm === "payments" ? adminPaymentIdFromPath(window.location.pathname) : null;
+      adm === "support"
+        ? adminSupportTicketIdFromPath(window.location.pathname, routePrefix)
+        : null;
+    const paymentId =
+      adm === "payments" ? adminPaymentIdFromPath(window.location.pathname, routePrefix) : null;
     const paymentUserId =
-      adm === "payments" ? adminPaymentsUserIdFromPath(window.location.pathname) : null;
+      adm === "payments"
+        ? adminPaymentsUserIdFromPath(window.location.pathname, routePrefix)
+        : null;
     if (adm === "users" && uid) targetPath = `/admin/users/${uid}`;
     else if (adm === "support" && supportTicketId) targetPath = `/admin/support/${supportTicketId}`;
     else if (adm === "payments" && paymentUserId)
@@ -113,6 +140,7 @@ export function syncSectionPath(section, replace = false, adminSection = null, a
     else if (adm === "payments" && paymentId) targetPath = `/admin/payments/${paymentId}`;
     else targetPath = `/admin/${adm}`;
   }
+  targetPath = withRoutePrefix(targetPath, routePrefix);
   if (window.location.pathname === targetPath) return;
   const nextUrl = `${targetPath}${window.location.search}${window.location.hash}`;
   window.history[replace ? "replaceState" : "pushState"](null, "", nextUrl);
diff --git a/frontend/src/lib/webapp/stores/supportStore.js b/frontend/src/lib/webapp/stores/supportStore.js
index 95d7202..1653d48 100644
--- a/frontend/src/lib/webapp/stores/supportStore.js
+++ b/frontend/src/lib/webapp/stores/supportStore.js
@@ -1,6 +1,7 @@
 import { writable } from "svelte/store";
+import { withRoutePrefix } from "../routes.js";
 
-export function createSupportStore({ api, t, showToast }) {
+export function createSupportStore({ api, t, showToast, routePrefix = "" }) {
   const OPEN_TICKET_POLL_MS = 3_000;
   const ACTIVE_POLL_MS = 8_000;
   const BACKGROUND_POLL_MS = 45_000;
@@ -198,7 +199,7 @@ export function createSupportStore({ api, t, showToast }) {
       detailLoading: true,
     }));
     if (!opts.skipPush && typeof window !== "undefined" && window.location.protocol !== "file:") {
-      const target = `/support/${id}`;
+      const target = withRoutePrefix(`/support/${id}`, routePrefix);
       if (window.location.pathname !== target) {
         window.history.pushState(
           null,
@@ -232,11 +233,12 @@ export function createSupportStore({ api, t, showToast }) {
   function closeTicketView(opts = {}) {
     state.update((s) => ({ ...s, openedTicketId: null, openedTicket: null, messages: [] }));
     if (!opts.skipPush && typeof window !== "undefined" && window.location.protocol !== "file:") {
-      if (window.location.pathname.startsWith("/support/")) {
+      const supportPath = withRoutePrefix("/support", routePrefix);
+      if (window.location.pathname.startsWith(`${supportPath}/`)) {
         window.history.pushState(
           null,
           "",
-          `/support${window.location.search}${window.location.hash}`
+          `${supportPath}${window.location.search}${window.location.hash}`
         );
       }
     }