I am unable to edit my payment - I want to use a new credit card # and it is using my last one which is outdated

To view or edit your 1-Click payment method:

1. Manage Your Content and Devices.
2. From Settings, select Edit Payment Method below Digital Payment Settings.
3. Select the desired credit card information, or add a new card, and then click Continue.
4. Enter the desired billing address, and then click Continue. You will be taken back to the Digital Payment Settings page where you can view your edited 1-Click payment method.

Ive always had to do this on a computer, not my phone or my reader.