fix: add coupony only at OrderInProcess

src/QUI/ERP/Coupons/Events.php

@@ -360,6 +360,10 @@ protected static function addSessionCouponsToOrder($Order, $coupons)
      */
     protected static function addCouponToOrder($Order, $coupon)
     {
+        if (!($Order instanceof QUI\ERP\Order\OrderInProcess)) {
+            return;
+        }
+
         try {
             $code = Handler::sanitizeCode($coupon);