diff --git a/src/App.tsx b/src/App.tsx
index 81b8c58..00018db 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -36,7 +36,7 @@ import { DashboardPage } from './pages/Dashboard';
 import { SettingsPage } from './pages/Settings';
 import { GDPRPage } from './pages/GDPR';
 import { FeatureViewPage } from './pages/FeatureView';
-import { AdminMandatesPage, AdminUsersPage, AdminUserMandatesPage, AdminFeatureAccessPage, AdminInvitationsPage, AdminFeatureRolesPage, AdminFeatureInstanceUsersPage, AdminMandateRolesPage, AdminMandateRolePermissionsPage, AdminUserAccessOverviewPage } from './pages/admin';
+import { AdminMandatesPage, AdminUsersPage, AdminUserMandatesPage, AdminFeatureAccessPage, AdminInvitationsPage, AdminFeatureRolesPage, AdminFeatureInstanceUsersPage, AdminMandateRolesPage, AdminMandateRolePermissionsPage, AdminUserAccessOverviewPage, AccessManagementHub } from './pages/admin';
 import { PlaygroundPage, WorkflowsPage, AutomationsPage } from './pages/workflows';
 import { PromptsPage, FilesPage, ConnectionsPage } from './pages/basedata';
 function App() {
@@ -163,6 +163,7 @@ function App() {
                                 <Route path="mandates" element={<AdminMandatesPage />} />
                                 <Route path="users" element={<AdminUsersPage />} />
                                 <Route path="user-mandates" element={<AdminUserMandatesPage />} />
+                                <Route path="access" element={<AccessManagementHub />} />
                                 <Route path="feature-instances" element={<AdminFeatureAccessPage />} />
                                 <Route path="feature-roles" element={<AdminFeatureRolesPage />} />
                                 <Route path="feature-users" element={<AdminFeatureInstanceUsersPage />} />
diff --git a/src/hooks/useFeatureAccess.ts b/src/hooks/useFeatureAccess.ts
index a8b8cd7..739c022 100644
--- a/src/hooks/useFeatureAccess.ts
+++ b/src/hooks/useFeatureAccess.ts
@@ -102,7 +102,15 @@ export function useFeatureAccess() {
     setError(null);
     try {
       const response = await api.get('/api/features/');
-      const data = Array.isArray(response.data) ? response.data : [];
+      // Handle different API response formats (array, {items}, {data})
+      let data: Feature[] = [];
+      if (Array.isArray(response.data)) {
+        data = response.data;
+      } else if (response.data?.items && Array.isArray(response.data.items)) {
+        data = response.data.items;
+      } else if (response.data?.data && Array.isArray(response.data.data)) {
+        data = response.data.data;
+      }
       setFeatures(data);
       return data;
     } catch (err: any) {
diff --git a/src/pages/admin/AdminFeatureAccessPage.tsx b/src/pages/admin/AdminFeatureAccessPage.tsx
index af99f07..1f7c83c 100644
--- a/src/pages/admin/AdminFeatureAccessPage.tsx
+++ b/src/pages/admin/AdminFeatureAccessPage.tsx
@@ -390,6 +390,7 @@ export const AdminFeatureAccessPage: React.FC = () => {
               className={styles.primaryButton}
               onClick={() => setShowCreateModal(true)}
               disabled={features.length === 0}
+              title={features.length === 0 ? 'Keine Features verfügbar. Bitte laden Sie die Seite neu oder prüfen Sie die Konsole auf Fehler.' : undefined}
             >
               <FaPlus /> Neue Instanz
             </button>
@@ -397,8 +398,8 @@ export const AdminFeatureAccessPage: React.FC = () => {
         )}
       </div>
 
-      {/* Available Features Info */}
-      {features.length > 0 && (
+      {/* Available Features Info / Empty Features Warning */}
+      {features.length > 0 ? (
         <div className={styles.infoBox}>
           <FaCube style={{ marginRight: 8 }} />
           <span>Verfügbare Features: </span>
@@ -409,7 +410,23 @@ export const AdminFeatureAccessPage: React.FC = () => {
             </span>
           ))}
         </div>
-      )}
+      ) : selectedMandateId && !loading ? (
+        <div className={styles.infoBox} style={{ borderColor: 'var(--error-color, #dc3545)', backgroundColor: 'var(--error-bg, rgba(220, 53, 69, 0.1))' }}>
+          <FaCube style={{ marginRight: 8 }} />
+          <span>
+            Keine Features geladen.
+            {error ? ` Fehler: ${error}` : ' Die API hat keine Features zurückgegeben.'}
+            {' '}Öffnen Sie die Browser-Konsole (F12) und prüfen Sie den Netzwerk-Tab für /api/features/
+          </span>
+          <button
+            className={styles.secondaryButton}
+            onClick={() => fetchFeatures()}
+            style={{ marginLeft: '1rem' }}
+          >
+            <FaSync /> Features erneut laden
+          </button>
+        </div>
+      ) : null}
 
       {/* Content */}
       {!selectedMandateId ? (
@@ -436,6 +453,7 @@ export const AdminFeatureAccessPage: React.FC = () => {
             className={styles.primaryButton}
             onClick={() => setShowCreateModal(true)}
             disabled={features.length === 0}
+            title={features.length === 0 ? 'Keine Features verfügbar. Bitte laden Sie die Features erneut.' : undefined}
           >
             <FaPlus /> Erste Instanz erstellen
           </button>