diff --git a/public/js/privacy-storage.js b/public/js/privacy-storage.js
index 949199f..aacad36 100644
--- a/public/js/privacy-storage.js
+++ b/public/js/privacy-storage.js
@@ -85,10 +85,6 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     return nextValue;
   }
 
-  function cookiesEnabled() {
-    return false;
-  }
-
   function routeId(route) {
     const id = route?.id ?? route?.routeId ?? route;
     if (id === null || id === undefined || id === '') return null;
@@ -104,9 +100,25 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     return numericIdSet([...values, value]);
   }
 
+  function isRouteStateObject(value) {
+    return value && typeof value === 'object' && (
+      Object.hasOwn(value, 'routeId')
+      || Object.hasOwn(value, 'routeState')
+      || Object.hasOwn(value, 'routeProgressIndex')
+      || Object.hasOwn(value, 'visitedPoiIds')
+      || Object.hasOwn(value, 'viewedPoiIds')
+      || Object.hasOwn(value, 'playedAudioPoiIds')
+    );
+  }
+
   function progressEnvelope(value) {
-    const routes = value?.routes && typeof value.routes === 'object' ? value.routes : value;
-    return routes && typeof routes === 'object' ? routes : {};
+    if (!value || typeof value !== 'object') return {};
+    if (value.routes && typeof value.routes === 'object') return value.routes;
+    if (isRouteStateObject(value)) {
+      const id = routeId(value);
+      return id ? { [id]: value } : {};
+    }
+    return value;
   }
 
   function readProgressStore() {
@@ -121,19 +133,27 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     });
   }
 
-  function normalizeRouteState(value) {
+  function stateTimestamp(value) {
+    return Number(value?.updatedAt) || Number(value?.savedAt) || now();
+  }
+
+  function normalizeRouteState(value, fallbackRouteId = null) {
     if (!value || typeof value !== 'object') return null;
 
+    const id = value.routeId === null || value.routeId === undefined
+      ? fallbackRouteId
+      : value.routeId;
+
     return {
-      routeId: value.routeId === null || value.routeId === undefined ? null : String(value.routeId),
+      routeId: id === null || id === undefined ? null : String(id),
       routeName: String(value.routeName ?? ''),
       routeState: value.routeState === 'running' || value.routeState === 'paused' ? value.routeState : 'idle',
       routeProgressIndex: Number.isInteger(value.routeProgressIndex) ? value.routeProgressIndex : null,
       visitedPoiIds: numericIdSet(value.visitedPoiIds),
       viewedPoiIds: numericIdSet(value.viewedPoiIds),
       playedAudioPoiIds: numericIdSet(value.playedAudioPoiIds),
-      savedAt: Number(value.savedAt) || Number(value.updatedAt) || 0,
-      updatedAt: Number(value.updatedAt) || Number(value.savedAt) || 0
+      savedAt: Number(value.savedAt) || Number(value.updatedAt) || now(),
+      updatedAt: stateTimestamp(value)
     };
   }
 
@@ -153,13 +173,13 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
   }
 
   function currentRouteState(routes, id, route = null) {
-    const normalized = normalizeRouteState(routes[id]);
+    const normalized = normalizeRouteState(routes[id], id);
     return normalized ?? freshEmptyRouteState(id, route);
   }
 
   function isExpired(value, referenceTime = now()) {
-    const timestamp = Number(value?.updatedAt) || Number(value?.savedAt) || 0;
-    return timestamp <= 0 || referenceTime - timestamp > MAX_PROGRESS_AGE_MS;
+    const timestamp = Number(value?.updatedAt) || Number(value?.savedAt) || now();
+    return referenceTime - timestamp > MAX_PROGRESS_AGE_MS;
   }
 
   function reportCleanupProgress(callback, processed, total, removed) {
@@ -179,7 +199,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     updated.routeId = id;
     updated.updatedAt = now();
     if (!updated.savedAt) updated.savedAt = updated.updatedAt;
-    routes[id] = normalizeRouteState(updated);
+    routes[id] = normalizeRouteState(updated, id);
     return writeProgressStore(routes);
   }
 
@@ -197,7 +217,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     }));
   }
 
-  function markPlayedAudio(route, poiId) {
+  function markAudioPlayed(route, poiId) {
     return updateRouteState(route, entry => ({
       ...entry,
       playedAudioPoiIds: addNumericId(entry.playedAudioPoiIds, poiId)
@@ -234,7 +254,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     let removed = 0;
 
     entries.forEach(([id, value], index) => {
-      const normalized = normalizeRouteState(value);
+      const normalized = normalizeRouteState(value, id);
       if (normalized && !isExpired(normalized, referenceTime)) kept[id] = normalized;
       else removed += 1;
       reportCleanupProgress(progressCallback, index + 1, entries.length, removed);
@@ -255,7 +275,7 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     if (!id) return null;
 
     const routes = cleanupExpired().routes;
-    const saved = normalizeRouteState(routes[id]);
+    const saved = normalizeRouteState(routes[id], id);
     return saved && !isExpired(saved) ? saved : null;
   }
 
@@ -267,11 +287,12 @@ globalThis.Wegwichtel = globalThis.Wegwichtel || {};
     cleanExpiredProgress: cleanupExpiredProgress,
     cleanupExpired,
     cleanupExpiredProgress,
-    cookiesEnabled,
+    cookiesEnabled: () => false,
     getPrivacySettings: readSettings,
     isProgressStorageEnabled,
-    markPlayed: markPlayedAudio,
-    markPlayedAudio,
+    markAudioPlayed,
+    markPlayed: markAudioPlayed,
+    markPlayedAudio: markAudioPlayed,
     markVisited,
     markViewed,
     removeExpiredProgress: cleanupExpiredProgress,