Not recognizing my Demi tariff – SBB Mobile Review

The app has my SwissPass card (with demi-tariff) stored but it doesn’t give me the option of buying tickets at 50% price. Went into train station where they confirmed it’s a problem with the app. Means I can’t buy tickets through the app and always must buy at station... very annoying. Please fix.
Review by Nirevesnas on SBB Mobile.