A lot of things.

config/auth.php

@@ -45,6 +45,7 @@ return [
         ],
         'xenforo' => [
             'driver' => 'xenforo',
+            'provider' => 'users',
         ]
     ],
 

config/menu.php

@@ -82,7 +82,7 @@ return [
             [
                 'name' => 'Contact Us',
                 'icon' => 'at-sign',
-                'route' => 'home'
+                'xf_route' => 'misc/contact'
             ],
             [
                 'name' => 'Legal pages',

config/xenforo.php

@@ -0,0 +1,18 @@
+<?php
+
+return [
+    'bot_user_id' => 1,
+
+    'comments_node_id' => 4,
+
+    'comments_prefixes' => [
+        'translations' => 1,
+        'romhacks' => 2,
+        'homebrew' => 3,
+        'utilities' => 4,
+        'documents' => 5,
+        'lua-scripts' => 6,
+        'tutorials' => 7,
+        'news' => 8
+    ],
+];