I have received a message telling me my card is invalid. What should I do? Check that you are correctly entering your 16 digit Nando’s card number on the back of your Nando’s Card. If you continue to see the message, please contact our Customer Support team Related articles I’ve received a message telling me that my card is already registered. What should I do? How do I add a Nando’s Card to my Nando's Account? Can I use vouchers or Gift Cards when I order online? How do I enable two-factor authentication (2FA) on my account? When does my Gift Card expire?