Good Evening,
Not sure if you were aware of this, but during Demon Veil on Stadia, whenever I would try to access the Battle Pass / Challenges pages from the Home Screen, the game would crash and say "Oh no! Game has crashed" or "Uh oh! Game has glitched, please restart your game to continue playing", something along those lines.
There's not much troubleshooting you can do on Stadia, besides restarting the game...so, I'm not sure where to go from here.
I haven't had any issues with anything else like Matchmaking, accessing the Operators menu, etc.
Thanks.
iluminate