diff --git a/assets/styles/app.css b/assets/styles/app.css
index 2ff5d77..0294b53 100644
--- a/assets/styles/app.css
+++ b/assets/styles/app.css
@@ -23,7 +23,7 @@
         @apply bg-green-950 hover:bg-green-900 border-green-500
     }
     .alert-warning {
-        @apply bg-yellow-500/70 hover:bg-yellow-600 border-yellow-400 text-black
+        @apply bg-yellow-500 hover:bg-yellow-600 border-yellow-400 text-black
     }
 }
 
diff --git a/config/services.yaml b/config/services.yaml
index 29d8d2d..f44dc32 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -4,6 +4,15 @@
 # Put parameters here that don't need to change on each machine where the app is deployed
 # https://symfony.com/doc/current/best_practices.html#use-parameters-for-application-configuration
 parameters:
+    # App
+    app.url: '%env(APP_URL)%'
+
+    # Debrid Services
+    app.debrid.real_debrid.key: '%env(REAL_DEBRID_KEY)%'
+
+    # TMDB Key
+    app.meta_provider.tmdb.key: '%env(TMDB_API)%'
+
     # Media
     media.base_path: '/var/download'
     media.default_movies_dir: movies
diff --git a/src/Base/ConfigResolver.php b/src/Base/ConfigResolver.php
new file mode 100644
index 0000000..28ccc8f
--- /dev/null
+++ b/src/Base/ConfigResolver.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace App\Base;
+
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+
+final class ConfigResolver
+{
+    private array $messages = [];
+
+    public function __construct(
+        #[Autowire(param: 'app.url')]
+        private readonly ?string $appUrl = null,
+
+        #[Autowire(param: 'app.debrid.real_debrid.key')]
+        private readonly ?string $realDebridApiKey = null,
+
+        #[Autowire(param: 'app.meta_provider.tmdb.key')]
+        private readonly ?string $tmdbApiKey = null,
+
+        #[Autowire(param: 'media.movies_path')]
+        private readonly ?string $moviesPath = null,
+
+        #[Autowire(param: 'media.tvshows.path')]
+        private readonly ?string $tvshowsPath = null,
+    ) {}
+
+    public function validate(): bool
+    {
+        $valid = true;
+
+        if (null === $this->realDebridApiKey || "" === $this->realDebridApiKey) {
+            $this->messages[] = "Your Real Debrid API key is missing. Please set it to the 'REAL_DEBRID_KEY' environment variable.";
+            $valid = false;
+        }
+
+        if (null === $this->tmdbApiKey || "" === $this->tmdbApiKey) {
+            $this->messages[] = "Your TMDB API key is missing. Please set it to the 'TMDB_API' environment variable.";
+            $valid = false;
+        }
+
+        return $valid;
+    }
+
+    public function getMessages(): array
+    {
+        return $this->messages;
+    }
+}
diff --git a/src/User/Framework/Controller/Web/PreferencesController.php b/src/User/Framework/Controller/Web/PreferencesController.php
index 8edbbb1..beaf538 100644
--- a/src/User/Framework/Controller/Web/PreferencesController.php
+++ b/src/User/Framework/Controller/Web/PreferencesController.php
@@ -98,7 +98,8 @@ class PreferencesController extends AbstractController
             [
                 'preferences' => $this->preferencesRepository->findEnabled(),
                 'languages' => $languages,
-                'providers' => ProviderList::$providers,
+                'providers' => ProviderList::getProviders(),
+                'qualities' => QualityList::getBaseQualities(),
                 'mediaPreferences' => $mediaPreferences,
                 'downloadPreferences' => $downloadPreferences,
             ]
diff --git a/src/User/Framework/EventListener/LoginSuccessListener.php b/src/User/Framework/EventListener/LoginSuccessListener.php
index 64d856c..3d249de 100644
--- a/src/User/Framework/EventListener/LoginSuccessListener.php
+++ b/src/User/Framework/EventListener/LoginSuccessListener.php
@@ -2,6 +2,8 @@
 
 namespace App\User\Framework\EventListener;
 
+use App\Base\ConfigResolver;
+use App\Base\Util\Broadcaster;
 use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\Security\Core\Event\AuthenticationSuccessEvent;
@@ -10,12 +12,26 @@ final class LoginSuccessListener
 {
     public function __construct(
         private readonly RequestStack $requestStack,
+        private readonly ConfigResolver $configResolver,
+        private readonly Broadcaster $broadcaster,
     ) {}
 
-    #[AsEventListener(event: 'security.authentication.success')]
+    #[AsEventListener(event: 'security.authentication.success', priority: 20)]
     public function setMercureTopics(AuthenticationSuccessEvent $event): void
     {
         // Set the unique Mercure topic name for the User's alerts
         $this->requestStack->getSession()->set('mercure_alert_topic', 'alerts_' . uniqid());
     }
+
+    #[AsEventListener(event: 'security.authentication.success', priority: 10)]
+    public function validateConfig(AuthenticationSuccessEvent $event): void
+    {
+        // Set the unique Mercure topic name for the User's alerts
+        $valid = $this->configResolver->validate();
+        if (false === $valid) {
+            foreach ($this->configResolver->getMessages() as $message) {
+                $this->requestStack->getSession()->getFlashBag()->add('warning', $message);
+            }
+        }
+    }
 }
diff --git a/templates/components/Alert.html.twig b/templates/components/Alert.html.twig
index 438855a..bba739e 100644
--- a/templates/components/Alert.html.twig
+++ b/templates/components/Alert.html.twig
@@ -7,20 +7,9 @@
             <path d="M10 .5a9.5 9.5 0 1 0 9.5 9.5A9.51 9.51 0 0 0 10 .5ZM9.5 4a1.5 1.5 0 1 1 0 3 1.5 1.5 0 0 1 0-3ZM12 15H8a1 1 0 0 1 0-2h1v-3H8a1 1 0 0 1 0-2h2a1 1 0 0 1 1 1v4h1a1 1 0 0 1 0 2Z"/>
         </svg>
         <span class="sr-only">Info</span>
-        <h3 class="text-lg font-medium">{{ title|default('') }}</h3>
+        <h3 class="text-lg font-medium font-bold">{{ title|default('') }}</h3>
     </div>
-    <div class="mt-2 text-sm">
+    <div class="mt-2 text-sm w-[350px] font-bold">
         {{ message }}
     </div>
-{#    <div class="flex">#}
-{#        <button type="button" class="text-white bg-green-800 hover:bg-green-900 focus:ring-4 focus:outline-none focus:ring-green-300 font-medium rounded-lg text-xs px-3 py-1.5 me-2 text-center inline-flex items-center dark:bg-green-600 dark:hover:bg-green-700 dark:focus:ring-green-800">#}
-{#            <svg class="me-2 h-3 w-3" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" fill="currentColor" viewBox="0 0 20 14">#}
-{#                <path d="M10 0C4.612 0 0 5.336 0 7c0 1.742 3.546 7 10 7 6.454 0 10-5.258 10-7 0-1.664-4.612-7-10-7Zm0 10a3 3 0 1 1 0-6 3 3 0 0 1 0 6Z"/>#}
-{#            </svg>#}
-{#            View more#}
-{#        </button>#}
-{#        <button type="button" class="text-green-800 bg-transparent border border-green-800 hover:bg-green-900 hover:text-white focus:ring-4 focus:outline-none focus:ring-green-300 font-medium rounded-lg text-xs px-3 py-1.5 text-center dark:hover:bg-green-600 dark:border-green-600 dark:text-green-400 dark:hover:text-white dark:focus:ring-green-800" data-dismiss-target="#alert-additional-content-3" aria-label="Close">#}
-{#            Dismiss#}
-{#        </button>#}
-{#    </div>#}
 </li>
\ No newline at end of file
diff --git a/templates/components/Header.html.twig b/templates/components/Header.html.twig
index 4a6fee6..e252d41 100644
--- a/templates/components/Header.html.twig
+++ b/templates/components/Header.html.twig
@@ -28,7 +28,10 @@
     </div>
     <div {{ turbo_stream_listen(app.session.get('mercure_alert_topic')) }} class="fixed z-40 top-10 right-10">
         <div class="z-40">
-            <ul id="alert_list">
+            <ul id="alert_list" class="flex flex-col gap-2">
+                {% for message in app.flashes('warning') %}
+                    <twig:Alert :title="'Warning'" :message="message" :alert_id="''" type="warning" data-controller="alert" />
+                {% endfor %}
             </ul>
         </div>
     </div>