This usually happens when the same card or bank account is already connected to a different RateCards or Stripe account — Stripe links each payment method to one account at a time for security.
A couple of things to try first:
Make sure you're signed in to the correct RateCards account.
If the card is genuinely yours, remove it from the other account, or add a different card or bank account instead.
If it still won't link, contact our support team — we work directly with Stripe, our payments partner, to unlink the method and get it resolved for you. In some cases Stripe may ask you to verify ownership of the card or account before it's released.