diff --git a/app.py b/app.py
index 827a2d5..5091bb8 100644
--- a/app.py
+++ b/app.py
@@ -251,6 +251,11 @@ def inject_time():
 def inject_has_authorized_cookie():
     return {'has_authorized_cookie': 'authorized' in request.cookies}
 
+@app.context_processor
+def inject_is_blocked():
+    ip = request.access_route[0]
+    return {'is_blocked': is_ip_blocked(ip)}
+
 @app.before_request
 def require_system_password():
 
diff --git a/templates/base.html b/templates/base.html
index e3c9947..fa3693c 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -18,7 +18,7 @@
       🛒 <span class="text-warning">Lista</span> Zakupów
     </a>
 
-    {% if has_authorized_cookie %}
+    {% if has_authorized_cookie and not is_blocked %}
       {% if current_user.is_authenticated %}
         <div class="d-flex justify-content-center align-items-center text-white small flex-wrap text-center">
           <span class="me-1">Zalogowany:</span>
@@ -34,7 +34,7 @@
 
 
     <div class="d-flex align-items-center gap-2">
-      {% if request.endpoint != 'system_auth' %}
+      {% if request.endpoint and request.endpoint != 'system_auth' %}
         {% if current_user.is_authenticated and current_user.is_admin %}
           <a href="{{ url_for('admin_panel') }}" class="btn btn-outline-warning btn-sm">⚙️ Panel admina</a>
         {% endif %}
diff --git a/templates/errors.html b/templates/errors.html
index 4ce0df2..b3c5c0f 100644
--- a/templates/errors.html
+++ b/templates/errors.html
@@ -4,7 +4,6 @@
 
 <div class="d-flex justify-content-between align-items-center flex-wrap mb-4">
   <h2 class="mb-2">{{ code }} — {{ title }}</h2>
-  <a href="{{ url_for('main_page') }}" class="btn btn-outline-secondary">← Powrót na stronę główną</a>
 </div>
 
 <div class="card bg-dark text-white">