On Android devices the payment method change needs to be performed on Google Play. Here is how you can proceed:
- Go to Google Wallet and sign in to the account you use on Google Play.
- On the left side of your screen, click Payment Methods.
- Do one of the following: To add a credit or debit card, select
- Add a payment method. To edit an existing payment method, select Edit or Remove next to the payment method you want to update.
On an iOS device you can change the payment info following the link below: