Question about Garmin Topo Switzerland v2 Pro Voucher

Hello everyone, I received the voucher yesterday and my new GPSMAP 65S from Garmin. Unfortunately, I always get the message that this is not possible at the moment. But unfortunately there is no further information about what is wrong. Is it possible that the voucher will only be activated once I have paid the bill at Digitec? Merci ond Gruess for an answer.