diff --git a/src/Service/CronTask.php b/src/Service/CronTask.php
index 8221db4..584e348 100644
--- a/src/Service/CronTask.php
+++ b/src/Service/CronTask.php
@@ -11,7 +11,7 @@
 
 class CronTask extends ScheduledTask
 {
-    public const CRON_INTERVAL = 600;
+    public const CRON_INTERVAL = 30;
 
     public static function getTaskName(): string
     {
diff --git a/src/Service/CronTaskHandler.php b/src/Service/CronTaskHandler.php
index 22290f7..4c4793e 100644
--- a/src/Service/CronTaskHandler.php
+++ b/src/Service/CronTaskHandler.php
@@ -157,7 +157,7 @@ private function getTimeInterval($config)
      * @return void
      * @throws \Exception
      */
-    public function processOrder(array $order)
+    private function processOrder(array $order)
     {
         if (!array_key_exists('custom_fields', $order)) {
             return;
@@ -166,7 +166,6 @@ public function processOrder(array $order)
         if (!array_key_exists(Form::CUSTOM_FIELD_WORLDLINE_PAYMENT_HOSTED_CHECKOUT_ID, $customFields)) {
             return;
         }
-
         $hostedCheckoutId = $customFields[Form::CUSTOM_FIELD_WORLDLINE_PAYMENT_HOSTED_CHECKOUT_ID];
 
         $order = PaymentHandler::getOrder(