How many times will the customs text message be sent?

If you don't receive the SMS notification, of course, you need to apply for customs declaration again, because if you don't receive the SMS notification, it means that your customs declaration application has not been accepted and you need to apply for customs declaration again.

If there is no SMS notification, it is possible to declare again, because they miss you, and this will happen. Under normal circumstances, if the fire is not notified, it can be declared again, because it was possible at that time.