https://www.epo.org/en/node/green-light-my-smart-card

The green light on my smart card reader is flashing. How do I know if the reader recognises my card?

The green light should go from blinking to steady when you insert your card. If it does not, check that the end of the card with the chip element is inserted face-up in the direction of the arrow, and that the cryptovision software is installed.