How do I change my credit card information in the Kobo App?
Some users are reporting a Uh-Oh! error message when trying to do this through the app itself.
Instead of using the app, log on at the Kobobooks.com Website.
Once logged in, go to "My Account", then scroll down to "Billing address & Credit Card" and update your credit card payment method there. Click Save after updating.
Once your new information is saved at the web site, go back to your Cruz, log out of the Kobo app and back in again, or restart your Cruz and log back in to the Kobo app.