The free of charge membership: You may search and enter data free of charge.

As a member you can register on your respective user account page as premium subscriber. You enter your billing address and select the desired method of payment option. You conclude the process of joining the premium membership by confirming the details.

You can pay by direct debit, credit card or direct bank transfer without an account statement. The amount will be debited automatically after joining the premium service.

The account will be sent to your email address after becoming a member of the premium service.

You may change your billing address in your user account. Please note, that we cannot change the billing address retrospectively.

The member can cancel the free-of-of-charge membership at any time without a cancellation period. Send a cancellation email via the contact form.