To change your card on file, log into your account and click on you username. This is located on the right side of the screen-just under pedigrees and next to “My Products”. On this new screen, you will see any saved cards on the right. To delete a card on file, click on the “ x “. If you have multiple cards saved, you will need to delete the default card last. If you try to delete the default card prior to all other cards being removed, it will not delete the card. You also cannot edit a card, only delete it and add a new one. Once all cards are deleted, you will see a screen to enter your new card information. Once you have filled in all of the information, click save to save your card for future use.