It happened again 
They took my seat reservation as a ticket
The UI in the ÖBB Tickets app looks the same if you have:
- A valid ticket, and a button to show Vorteilscard (the 50% off discount), or if you have
- A seat reservation, and a button to show the Reservierungsvorteil (the 50% off of seat reservations)
I showed the conductor the Reservierungsvorteil first, he told me I should go back in the UI, after which he scanned my seat reservation (not a ticket), and then Reservierungsvorteil.
I believe they think it's a ticket + Vorteilscard.
I mean, I then also asked him if he wants to see my KlimaTicket Ö (which I do have) I even opened it, but he showed no interest in it.
Only joking if I also have a ticket for my Blåhaj.
This is now the 6th or 7th time they (presumably) mistook a seat reservation + Reservierungsvorteil as a ticket + Vorteilscard.
#ÖBB