fix(CouponCodeInput): mobile buttons adjusted

Related: quiqqer/template-cologne#103

src/QUI/ERP/Coupons/Products/Handler.php

@@ -111,8 +111,8 @@ public static function createCouponCodesFromOrder(QUI\ERP\Order\AbstractOrder $O
                     \rename($couponPdfFile, $newCouponPdfFile);
 
                     // Add PDF file to customer files
-                    CustomerFiles::addFileToCustomer($Customer->getId(), $newCouponPdfFile);
-                    CustomerFiles::addFileToDownloadEntry($Customer->getId(), \basename($newCouponPdfFile));
+                    CustomerFiles::addFileToCustomer($Customer->getUUID(), $newCouponPdfFile);
+                    CustomerFiles::addFileToDownloadEntry($Customer->getUUID(), \basename($newCouponPdfFile));
 
                     $customerDir = CustomerFiles::getFolderPath($Customer);
                     $couponFilePathCustomerDir = $customerDir . DIRECTORY_SEPARATOR . \basename($newCouponPdfFile);
@@ -210,7 +210,7 @@ protected static function createCouponCodeFromProduct(
             $isTransferable = $Product->getFieldValue(self::PRODUCT_FIELD_ID_TRANSFERABLE);
 
             if (empty($isTransferable)) {
-                $couponAttributes['userIds'] = [$User->getId()];
+                $couponAttributes['userIds'] = [$User->getUUID()];
             }
         }