If you get an error, don't try adding other cards to that account. I tried. It never worked. I think their system flags the account for whatever reason.
Erase All Content and Settings on an iPhone, create a new account, add a card. Don't delete the card unless you won't use that account again. Worked for me multiple times. I have an iPhone I use specifically for this kind of stuff. Resetting an Android phone is pointless because they know your IMEI.
Erase All Content and Settings on an iPhone, create a new account, add a card. Don't delete the card unless you won't use that account again. Worked for me multiple times. I have an iPhone I use specifically for this kind of stuff. Resetting an Android phone is pointless because they know your IMEI.