diff --git a/Web/app.py b/Web/app.py
index 725c02d..6d38621 100755
--- a/Web/app.py
+++ b/Web/app.py
@@ -3641,6 +3641,7 @@ def test_mahnungen():
             return val
 
     current_time = datetime.datetime.now(ZoneInfo("Europe/Berlin"))
+    current_time_naive = current_time.replace(tzinfo=None)
     client = None
 
     try:
@@ -3722,8 +3723,8 @@ def test_mahnungen():
                         or '—'
                 )
 
-                due_date = appt.get('DueDate', current_time)
-                current_time_naive = current_time.replace(tzinfo=None)
+                # KORREKTUR: 'record' statt 'appt'
+                due_date = record.get('DueDate', current_time)
                 due_date_naive = due_date.replace(tzinfo=None) if due_date else current_time_naive
                 days_overdue = (current_time_naive - due_date_naive).days
                 is_blocked = user_block_map.get(raw_user, False)
@@ -3733,7 +3734,7 @@ def test_mahnungen():
                     'item_name': item_name,
                     'user': display_user,
                     'klasse': user_class,
-                    'due_date': fmt_dt(due_date_obj),
+                    'due_date': fmt_dt(due_date), # KORREKTUR: 'due_date' statt 'due_date_obj'
                     'days_overdue': days_overdue,
                     'mahnstufe': record.get('Mahnstufe', 0),
                     'is_blocked': is_blocked