The fuel card has a daily limit. The limit is more than enough for a full tank. But what to do if your fuel card doesn't work?
If the fuel card does not work, check whether you have entered the correct PIN code. You'll find this on the back of the boardcomputer in the car. On the info card you will also find the refueling instructions.
If the PIN is correct but you aren't able to pay the gasoline, please inform Hely.