Fix CyberMail payload format: flat string for from/to fields

db.php

@@ -65,8 +65,8 @@ function sendEmail(string $to, string $toName, string $subject, string $html): b
     $apiKey = defined('CYBERMAIL_API_KEY') ? CYBERMAIL_API_KEY : '';
     if (!$apiKey || strpos($apiKey, 'YOUR_KEY') !== false) return false;
     $payload = json_encode([
-        'from'    => ['email' => MAIL_FROM, 'name' => MAIL_FROM_NAME],
-        'to'      => [['email' => $to, 'name' => $toName]],
+        'from'    => MAIL_FROM,
+        'to'      => $to,
         'subject' => $subject,
         'html'    => $html,
     ]);