How do I remove or delete a card?
Go to the "Payment Method" screen which you can either assess via the app's side menu ("Settings" - "Payments") or from the checkout screen. Tap "EDIT" and press on the red "REMOVE" button to delete a card. You will then be prompted to confirm the removal. Once a card is removed, it has to be added again during the checkout process. Please note that you can't delete the "PRIMARY" card since one valid card is required at all times. However, you can reassign the "PRIMARY" label to another card and then delete the former "PRIMARY" card.