To update your credit card on file with us, please log into your account, and go to the Members Area > My account > Credit Card page here:
HipStamp: https://www.hipstamp.com/members/account/payment-vault
HipComic: https://www.hipcomic.com/members/account/payment-vault
HipPostcard: https://www.hippostcard.com/members/account/payment-vault
Then, click the orange 'Update/Replace' card button, in order to add a new credit card, and remove your current one.
**IMPORTANT: Do not click 'Delete' on this page. Deleting your card on file will result in store closure, as all Sellers are required to have an active credit card on file. Be sure to click 'Update/Replace' and it will allow you to remove the current card on file, and input a new one.