If your payment method is rejected in the AppStore or iTunesStore, you will not be able to purchase or update the application unless you change or update your payment method.
If you have an unpaid balance in the AppStore or iTunesStore, you may see one of the following messages: "There was a billing problem with the previous purchase. Please edit your billing information to solve the problem. "There was a bill problem in the previous shopping. Click "Purchase History" to review and solve this problem. If you cancel now, you won't be able to shop until this payment problem is solved. " To solve this problem, please add a new payment method or update the billing information of the current payment method. Your unpaid balance will be paid. Then, you can buy other content and update your apps, including free apps.