Hello Lushiphogh33
Sorry, I probably wasn’t clear enough.
None of the touristic offers, to which the Swiss Travel Pass and Swiss Travel Pass Flex do belong, do ever appear in the SBB Mobile app. The Swiss Travel Pass can be added to the wallet, as it is sent by e-mail and there is also a button for adding it to the wallet. For the Swiss Travel Pass Flex, I am not sure if you can as well. I do not have access to the activation website.
The activation solely happens through the website you have mentioned, from where you can generate the QR code valid for the activated day. You can take screenshots of it and save them as images in your photo gallery. Make sure you have it activated before you hop on a public transit.
On days on which you use the STP Flex, you can tick the “GA travel card” box of the respective travel class in the SBB Mobile app.
You can find the setting when you do a dummy booking. Above the ticket offers, there is a pen to modify your traveller’s data. Click it to do the necessary seetings. For your wife, add her as co-passenger under tab Profile > Co-Traveler. To the same setting for her.
By doing so, the app will know that you both have a country wide valid travel pass, and it would only charge you for journeys which are not covered by your pass or for class upgrades in case you hold a 2nd class pass. Don’t forget to uncheck for days you do not have a pass and you therefore need to purchase regular tickets.
Ignore SwissPass and other travel cards settings, these are for residents / commuters only.
Let us know, should you need more explanation; it’s our passion to help with ticketing and travel questions.