I am suddenly being asked to verify contact information when using Apple Pay on a website with my iPhone. Tried 3 different cards.

Never had an issue with Apple Pay. TOday, I was trying to buy something, and it goes to the Apple Pay screen and asks me to double click the side button. When I. Do, I get a red exclamation point and it says to verify contact information. I select that, and I go to a screen and the contact info is correct. But I cannot proceed, there is no “DONE” to verify the contact. I tried 3 different cards, same behavior. Re-booted the phone, same behavior. Wi-fi or LTE, same problem.