It probably won't show up in the app, but it is technically possible. You'll need to do so at the airport, and state you can't do it online (doing so in person should still be a PPro/EXP benefit, someone can correct me if they changed the rules again for the nth time)
Well thankfully I live literally 5 min drive from the airport so it's not a major issue to go early and try my luck. Thanks for the advice.