diff --git a/partials/landingpages/modules/setup.php b/partials/landingpages/modules/setup.php
index acb2c59..043f572 100644
--- a/partials/landingpages/modules/setup.php
+++ b/partials/landingpages/modules/setup.php
@@ -39,10 +39,11 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             continue;
         }
         $type = (string)($field['type'] ?? 'text');
-        $value = $_POST[$name] ?? null;
+        $postKey = str_replace('.', '_', $name);
+        $value = $_POST[$postKey] ?? null;
 
         if ($type === 'checkbox') {
-            $value = isset($_POST[$name]) ? '1' : '0';
+            $value = isset($_POST[$postKey]) ? '1' : '0';
         }
         if (is_array($value)) {
             continue;