diff --git a/app.py b/app.py
index 02d2480..ad09bab 100644
--- a/app.py
+++ b/app.py
@@ -133,6 +133,16 @@ def get_progress(list_id):
     percent = (purchased_count / total_count * 100) if total_count > 0 else 0
     return purchased_count, total_count, percent
 
+def delete_receipts_for_list(list_id):
+    receipt_pattern = f"list_{list_id}_"
+    upload_folder = app.config['UPLOAD_FOLDER']
+    for filename in os.listdir(upload_folder):
+        if filename.startswith(receipt_pattern):
+            try:
+                os.remove(os.path.join(upload_folder, filename))
+            except Exception as e:
+                print(f"Nie udało się usunąć pliku {filename}: {e}")
+
 # zabezpieczenie logowani do systemy - błędne hasła
 def is_ip_blocked(ip):
     now = time.time()
@@ -174,7 +184,8 @@ def require_system_password():
     if 'authorized' not in request.cookies \
        and request.endpoint != 'system_auth' \
        and not request.endpoint.startswith('static') \
-       and not request.endpoint.startswith('login'):
+       and not request.endpoint.startswith('login') \
+       and request.endpoint != 'favicon':
         if request.path == '/':
             return redirect(url_for('system_auth'))
         else:
@@ -255,13 +266,13 @@ def index_guest():
 
 @app.route('/system-auth', methods=['GET', 'POST'])
 def system_auth():
-    ip = request.remote_addr
+    #ip = request.remote_addr
+    ip = request.access_route[0]
     next_page = request.args.get('next') or url_for('index_guest')
 
     if is_ip_blocked(ip):
         flash('Przekroczono limit prób logowania. Dostęp zablokowany na 1 godzinę.', 'danger')
         return render_template('system_auth.html'), 403
-
     if request.method == 'POST':
         if request.form['password'] == SYSTEM_PASSWORD:
             reset_failed_attempts(ip)
@@ -275,7 +286,6 @@ def system_auth():
                 return render_template('system_auth.html'), 403
             remaining = attempts_remaining(ip)
             flash(f'Nieprawidłowe hasło do systemu. Pozostało prób: {remaining}', 'warning')
-
     return render_template('system_auth.html')
 
 @app.route('/archive_my_list/<int:list_id>')
@@ -577,24 +587,15 @@ def admin_panel():
 def delete_list(list_id):
     if not current_user.is_admin:
         return redirect(url_for('index_guest'))
+    delete_receipts_for_list(list_id)
     list_to_delete = ShoppingList.query.get_or_404(list_id)
     Item.query.filter_by(list_id=list_to_delete.id).delete()
+    Expense.query.filter_by(list_id=list_to_delete.id).delete()
     db.session.delete(list_to_delete)
     db.session.commit()
     flash(f'Usunięto listę: {list_to_delete.title}', 'success')
     return redirect(url_for('admin_panel'))
 
-@app.route('/admin/delete_all_lists')
-@login_required
-def delete_all_lists():
-    if not current_user.is_admin:
-        return redirect(url_for('index_guest'))
-    Item.query.delete()
-    ShoppingList.query.delete()
-    db.session.commit()
-    flash('Usunięto wszystkie listy', 'success')
-    return redirect(url_for('admin_panel'))
-
 @app.route('/admin/add_user', methods=['GET', 'POST'])
 @login_required
 def add_user():
@@ -682,7 +683,9 @@ def delete_selected_lists():
     for list_id in ids:
         lst = ShoppingList.query.get(int(list_id))
         if lst:
+            delete_receipts_for_list(lst.id)
             Item.query.filter_by(list_id=lst.id).delete()
+            Expense.query.filter_by(list_id=lst.id).delete()
             db.session.delete(lst)
     db.session.commit()
     flash('Usunięto wybrane listy', 'success')
diff --git a/static/js/live.js b/static/js/live.js
index e9293a1..09c4327 100644
--- a/static/js/live.js
+++ b/static/js/live.js
@@ -1,5 +1,28 @@
 const socket = io();
 
+
+// --- Automatyczny reconnect po powrocie do karty/przywróceniu internetu ---
+function reconnectIfNeeded() {
+    if (!socket.connected) {
+        socket.connect();
+    }
+}
+
+document.addEventListener("visibilitychange", function() {
+    if (!document.hidden) {
+        reconnectIfNeeded();
+    }
+});
+
+window.addEventListener("focus", function() {
+    reconnectIfNeeded();
+});
+
+window.addEventListener("online", function() {
+    reconnectIfNeeded();
+});
+// --- koniec fragmentu reconnect ---
+
 function setupList(listId, username) {
   socket.emit('join_list', { room: listId, username: username });
 
diff --git a/templates/admin/admin_panel.html b/templates/admin/admin_panel.html
index a4fbddc..7fd6d01 100644
--- a/templates/admin/admin_panel.html
+++ b/templates/admin/admin_panel.html
@@ -30,7 +30,6 @@
             🗑️ Czyszczenie
           </a>
           <ul class="dropdown-menu">
-            <li><a class="dropdown-item text-danger" href="/admin/delete_all_lists">Usuń wszystkie listy</a></li>
             <li><a class="dropdown-item text-danger" href="/admin/delete_all_items">Usuń wszystkie produkty</a></li>
           </ul>
         </li>