Hello Xoapughe88
Thank you for your request
To activate your HT Plus travelcard in the SBB Mobile app, please proceed as follows:
Make sure you have the latest version of the SBB Mobile app installed on your device. You can download it from the App Store or Google Play.
Log in to the SBB Mobile app with your SwissPass login if you have not already done so.
Go to the “Profile” section in the app.
Select “Means of payment” or “Payment method” in the menu.
Look for the “HT Plus subscription” option. If you don’t see it, swipe down to refresh the app and check it again.
Have a nice day
Greetings
LevinA