There is no Credit/Debit Card on the Apple Online Store associated with your Apple ID

When visiting developer.apple.com to renew my Apple Developer Program membership, I see the following error: > There is no credit/debit card on the Apple Online Store associated with your Apple ID to auto-renew your membership. > > Add a credit/debit card to maintain membership benefits and keep your apps available on the App Store. > > Add Card or > The credit/debit card associated with your Apple ID on the Apple Online Store is expired. > > Update your credit/debit card to maintain membership benefits and keep your apps available on the App Store. > > Update Card When I click "Add Card", I am taken to appleid.apple.com. But when I go to edit the Payment & Shipping information, **my details are grayed out and cannot be edited**. "Apple Pay" is possibly selected, and I see no way to add a new Credit Card. How do I add a credit card?