diff --git a/Web/app.py b/Web/app.py
index c860f67..1459991 100755
--- a/Web/app.py
+++ b/Web/app.py
@@ -1160,8 +1160,8 @@ def _build_reminder_message(item_name, start_dt=None, end_dt=None):
     )
 
 
-def create_return_reminders():
-    """Create one-time reminders for day-1 and planned-end events."""
+def create_return_reminders_admin():
+    """Create one-time reminders for day-1 and planned-end events for admins."""
     now = datetime.datetime.now(ZoneInfo("Europe/Berlin"))
     one_day_ago = now - datetime.timedelta(days=1)
 
@@ -1202,9 +1202,14 @@ def create_return_reminders():
         for borrow_doc in candidates:
             borrow_id = str(borrow_doc.get('_id'))
             username = str(borrow_doc.get('User', '')).strip()
+
             if not borrow_id or not username:
                 continue
 
+            # Falls der Benutzername verschlüsselt ist, hier entschlüsseln,
+            # damit der Admin den echten Namen/Ausweis lesen kann.
+            display_user = decrypt_text(username) if 'decrypt_text' in globals() else username
+
             item_id = str(borrow_doc.get('Item', '')).strip()
             item_doc = item_docs.get(item_id, {})
             item_name = item_doc.get('Name') or f'Item {item_id}'
@@ -1215,30 +1220,33 @@ def create_return_reminders():
             if isinstance(start_dt, datetime.datetime) and start_dt <= one_day_ago:
                 _create_notification(
                     db,
-                    audience='user',
-                    notif_type='return_day_1',
-                    title='Erinnerung: Rueckgabe nach 1 Tag',
-                    message=_build_reminder_message(item_name, start_dt=start_dt, end_dt=end_dt),
-                    target_user=username,
-                    reference={'borrow_id': borrow_id, 'item_id': item_id, 'event': 'day_1'},
-                    unique_key=f'reminder:day1:{borrow_id}',
-                    severity='warning',
+                    audience='admin',
+                    notif_type='admin_return_day_1',
+                    title='Admin-Info: Ausleihe über 1 Tag aktiv',
+                    message=f'Nutzer {display_user} hat das Medium "{item_name}" seit über einem Tag ausgeliehen.',
+                    target_user=None,
+                    reference={'borrow_id': borrow_id, 'item_id': item_id, 'user': username, 'event': 'day_1'},
+                    unique_key=f'admin_reminder:day1:{borrow_id}',
+                    severity='info',
                 )
 
             if isinstance(end_dt, datetime.datetime) and end_dt <= now:
                 _create_notification(
                     db,
-                    audience='user',
-                    notif_type='return_after_end',
-                    title='Erinnerung: Geplante Ausleihe ist beendet',
-                    message=_build_reminder_message(item_name, start_dt=start_dt, end_dt=end_dt),
-                    target_user=username,
-                    reference={'borrow_id': borrow_id, 'item_id': item_id, 'event': 'after_end'},
-                    unique_key=f'reminder:end:{borrow_id}',
+                    audience='admin',
+                    notif_type='admin_return_after_end',
+                    title='Admin-Info: Geplante Ausleihe überfällig',
+                    message=f'Die Ausleihe von "{item_name}" durch {display_user} hat das geplante Enddatum überschritten.',
+                    target_user=None,
+                    reference={'borrow_id': borrow_id, 'item_id': item_id, 'user': username, 'event': 'after_end'},
+                    unique_key=f'admin_reminder:end:{borrow_id}',
                     severity='warning',
                 )
     except Exception as exc:
-        app.logger.warning(f"Reminder creation failed: {exc}")
+        if 'app' in globals():
+            app.logger.warning(f"Admin reminder creation failed: {exc}")
+        else:
+            print(f"Admin reminder creation failed: {exc}")
     finally:
         if client:
             client.close()
@@ -3618,7 +3626,7 @@ def generate_test_ausleihen():
 
         test_ausleihungen = [
             {
-                "User": user_val_1,
+                "User": encrypt_text(user_val_1),
                 "Item": str(item1_res.inserted_id),
                 "Status": "active",
                 "DueDate": due_date_stufe1,
@@ -3626,7 +3634,7 @@ def generate_test_ausleihen():
                 "LastUpdated": current_time
             },
             {
-                "User": user_val_2,
+                "User": encrypt_text(user_val_2),
                 "Item": str(item2_res.inserted_id),
                 "Status": "active",
                 "DueDate": due_date_stufe2,
@@ -3634,7 +3642,7 @@ def generate_test_ausleihen():
                 "LastUpdated": due_date_stufe2
             },
             {
-                "User": user_val_3,
+                "User": encrypt_text(user_val_3),
                 "Item": str(item3_res.inserted_id),
                 "Status": "active",
                 "DueDate": due_date_frisch,