Many people disable or uninstall Google applications on their phones. You have (by error or design) mandated Chrome in order to us the new SwissPass login. I find this totally unacceptable, please remove this requirement or allow us to continue using the old ticket shop login.
I tested also with the open source "chomium" browser but that does not work so I believe you are consenquentially forcing people into google's tracking.
Mobile app. I would like to suggest a feature of adding an alarm on trips which involve train changes. This way the user gets a sound reminder that needs to change trains. Feature not active by default.