You need to indicate the surname and name of the group leader and the reservation number.
The reservation number is in the upper right of the document that you signed or even in our confirmation.
Within the confirmation email we send you to accept your booking request, at the end of the PDF is shown "Last Name", "Name" and "Number of reservations." To proceed below you must fill in the data exactly as they have been registered in our system. Controls any spaces, apostrophes, etc.
In case of problems to start please make a picture of the “Error page” and contact us on firstname.lastname@example.org