Me too! I tried entering the numbers by hand, by copy and paste, by Google, on the app, on the PC....nothing works! The card doesn't expire for a few years and is active and working. I think it's a glitch because it's a card that I had put in through the app, then removed, then tried to put it back in. So for now I have to use a different card to book specialty dining. It better get fixed before final payment time in September because this is the card that gives me travel protection! If not, I'll have to cancel.