To ensure the safety of your credit card information Eat Your Books does not store this information - the financial transaction is between yourself and our payment processor, We are currently in a period of transition between two different payment processors. If your recurring payment (RP) was set up before June 2025 then it was with PayPal. You should cancel the RP on your Account page, which you access on the drop-down menu under your username at top right (or in the Menu on a phone). Then after your expiry date you will be directed to a renewal screen and you can set up a new RP.
If your recurring payment was set up after June 2025 then it is with RevenueCat This means that any changes you want to make regarding your credit card needs to be done directly with them. Click the link on your Account page to update your card details.