Hi @IheardthatU,
Thank you for your post, and welcome back to the community! I'm sorry to hear that you're unable to remove an old card. It is possible that the card is designated as the payment method in one or more pre-approved payments. You can edit those billing agreements by following these directions. Also, make sure that the new card is confirmed before trying to remove the old card.
I hope this helps!
Olivia
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