If you notice that the contactless feature of your Bittoro Card is not working, there are several possible reasons:
Sometimes some card terminals do not accept contactless payments. Make sure the terminal you are using has this feature.
If this is your first time using a Bittoro Card, be sure to use the chip and PIN code before attempting contactless payment for the first time.
If you haven't used the chip and PIN on your card recently, you may have exceeded your contactless limit. Simply entering your PIN should fix the problem and you should be able to use contactless again. The PIN is required after every 5 transactions you make or every time you spend €150, whichever comes first.
If you think your card is damaged in any way and this is causing a malfunction, you can always order a brand new Bittoro Card, although you will have to wait for it to be delivered. Refer to this article on how to reorder a card.