Every time you accept a contactless payment card, try the following to ensure a successful card read:
First, ask the customer to hold their contactless payment card directly on the device with the chip on the left side and the longer side of the card lined up with the edge of the tap area for several seconds.
If the card still doesn't read, ask the customer to slide the card to center the chip directly over the notch on the device.
If the contactless card remains unread without any feedback from the interface, the card might have a damaged antenna or might not work with contactless payments. You may ask for an alternative card or digital wallet.