Subscriber card problems

[Cesar Lopez TAS GT]

Hello Lot team.

We have 2 subscriber cards with problems. We get the following message on both entry and exit stations and the barrier does not open.

"Invalid MAC for contract CDPayPer"

This happens on cards number 42 and 43.

Card Number 43 started to work normal yesterday after presenting this problem twice. Card Number 2 continues with this problem.

This happens at our client´s parking Lot.

Best regards,

Cesar