fix: consider guest order user at checkout step

src/QUI/ERP/Shipping/EventHandler.php

@@ -19,6 +19,7 @@
 use QUI\Smarty\Collector;
 
 use function array_merge;
+use function class_exists;
 use function count;
 use function explode;
 use function json_decode;
@@ -297,6 +298,15 @@ public static function onQuiqqerOrderOrderProcessCheckoutOutput(
             return;
         }
 
+        $Customer = $Order->getCustomer();
+
+        if (
+            class_exists('QUI\ERP\Order\Guest\GuestOrderUser')
+            && $Customer->getId() === 6
+        ) {
+            return;
+        }
+
         $DeliveryAddress = $Order->getDeliveryAddress();
 
         if ($DeliveryAddress->getId() === 0 || $DeliveryAddress->getUUID() == 0) {