We got a 50 euro Geschenkkarte for my birthday. We came here today to use it, and they couldn 't scan the QR code from the Gutschein, which I showed on the phon... We got a 50 euro Geschenkkarte for my birthday. We came here today to use it, and they couldn 't scan the QR code from the Gutschein, which I showed on the phone, because it was not printed out