Why am I charged 10€ at the beginning of a ride?

This is not a debit, but a reservation. To make sure that you can pay for your ride, we reserve an amount on the card at the start of the rental, which varies depending on the partner (currently 10€ for e-scooter). When we receive the invoice for the rental the actual amount will be charged. If the invoice amount is higher, a subsequent booking will be made on the same payment method, if the actual amount is lower, then the difference will be released.