Reservation of the amount at the start of a parking session

When you start a parking process, the maximum amount that this parking process will cost is reserved on your credit card. In your example CHF 1.55.

If you end the parking process earlier, the amount actually due will be debited. In your example CHF 1.25.
If you extend the parking process, a new amount will be reserved.

Your credit card company is responsible for the correction booking. This may take a few days.
If the reservation is not corrected, please contact the issuer of your credit card.