Dear Sheena
Thank you for your question.
Do you already have the newset version of the app installed?
We also recommend deleting the cache or data of the SBB App. To do so, go to the Smartphone settings under ‘Apps’, ‘SBB Mobile’, ‘Storage’ and then ‘Clear cache’.
If the problem persists, I suggest you contact the speicalits directly via app or with the following form: https://www.sbb.ch/en/timetable/mobile-apps/sbb-mobile/contact.html
I wish you a nice afternoon,
EleonoraS