Switch to using the saved data flag

lib/data.dart

@@ -462,6 +462,7 @@ class SessionData {
 
   static Future<bool> DownloadData() async {
     Dio dio = Dio();
+    IsSavedData = false;
     Map<String, dynamic> payload = {"cmd": "get", "id": LastSessionID};
 
     // Send the data, and get the response

lib/main.dart

@@ -30,7 +30,7 @@ Future<void> main() async {
   SessionData.LastSessionID = sess;
   if (SessionData.LastSessionID.isNotEmpty) {
     await SessionData.DownloadData();
-    if (!SessionData.IsReadOnly) {
+    if (!SessionData.IsSavedData) {
       // Invalid session token
       SessionData.DisplayError = "The URL and or session token is invalid";
     }