I've tried both code via SMS and email on my phone but I get 'the code is invalid' on EasyPark, works fine to login via browser though. This is the only app that is not working after installing GrapheneOS, other apps that required an SMS token are working fine. I also receive the SMS when trying to login on the browser via PC. I'll try to find another workaround or use a different app instead.
This is the only app with the 'Play Integrity API usage' message I have installed, might some endpoint perhaps not be reachable due to permissions?