Hi I purchased a ticket via SBB mobile app for tomorrow leaving St Moritz at 13:48 to Tirano. It says that this trip has PR (paranomic Car) and that reservation is compulsory, I purchased a first class ticket. However i do not kno how to reserve a seat... it is not giving me the option. I clicked “ more ticket and reservation option” but still doesn’t let me.
According to SBB site, one is supposed to be able to reserve seats on the mobile app- that’s why I used this app.
Would the ticket office at the St Moritz be able to help me reserve seats?