What have you done to get the QR code?

The date for showing the QR code is defaulted to today's date. You must change the date til tomorrow's date to see the QR code for tomorrow. 

thank you!

>>>today I learned al lot and that you better activate a selected trip just in the train!!

>>>so I recommend this to everyone!!!

You're supposed to activate it before boarding. But a few seconds is enough.

This is especially important when you activate your pass, or a new travel day on a flexipass. The mobile pass will show the date and time when you did that so the ticket inspector can see whether it was done before or after boarding.

>>> Indeed even better, just before you get on the train!

BTW: I travel by global pass somewhere eastern europe 

have a nice trip to everyone!