

When I had that problem I was able to klick ‘add to Apple Wallet’ or something like this and it downloaded the .pkpass file. Maybe you need to spoof your useragent to present as a iOS device/PC?
Sometimes the agents who check tickets don’t accept something that looks unfamiliar though so be carefull. In most cases that does not agree with ther terms (which prohibit screenshots, not non-google wallet apps), but what’s your recourse? It’s not like anyone will sue over 7€…
I used PassAndroid in the past and can say the BVG ticket checkers were happy with it.