Why do you have to deposit a means of payment? Isn't the test phase supposed to be free?

We need a means of payment so that we can map all processes: PayPal or credit card (American Express, Visa or Mastercard). This is the only way we can map the entire sales process for you and for us. The costs of your journeys will be shown to you under "my journeys" on the following day. You will also receive an invoice by e-mail. Thanks to the hvv Any discount of 100% for the use of the hvv, which is valid during the test phase, your deposited means of payment will not be debited.