Hey there, @sabss. We aren't able to pay sellers to their credit cards so, your card expiring will have not relevance to your sale. The reason we need a valid card on file is in the event of a seller not being able to fulfill their sale; we would implement a penalty fee. Sellers are paid to the PayPal or direct deposit account that they've added through the "settings" of their profile. If you don't have either of those set up currently, we would recommend establishing that soon so there won't be any issues or delay when the event takes place and it's time for your payment to be sent.
Cards and direct deposit accounts are separate entities on our platform, @sabss. Cards can be removed upon request but, direct deposit accounts cannot. If your direct deposit account information has been updated, we would encourage you to create a new entry with the updated details. If you need us to update the method of payment on your sale to the newly added direct deposit account, send me a private message and I can definitely help you out with that.