Hi rsbrux
Thanks for your feedback. Especially older community posts are abused for spam comments. Therefore, we close the reply function.
Information about tickets (current and past trips) in SBB Mobile can be found at this link:
https://www.sbb.ch/en/help-and-contact/produkte-services/apps/sbb-mobile-sbb-preview/sbb-mobile-app.html#sbb3545af
If you still have questions, there are several support options available on the mentioned page at the bottom, such as using the contact form, by phone or live chat.
Best regards, Daniel