BEfore Itried adding my debit card as a pay,dnt methoicon my apple ID, I was using apple gift card credit. And the payment method part of my account had , none, checked out. But ever since I added theaward number and all the info,draped done, I can't go back to using apple credit. And downloading any app requires verification..and it won't accept because it's debit card. How do I go back to none?