Payment card verification

Trying to add a credit card to my Apple Wallet, the app says it requires verification. But it never showed a verification screen and now the card appears in the wallet but it is locked and i cannot find a way to verify or use it... the "i" and "Done" buttons are locked. No way to use them... If I get to this screen I have to force shut the app to escape. So at the moment i cannot use this card to pay and i cannot delete it either. What can I do to fix that? Thanks.