App won't start alfter upload to ALPHA distribution channel

I have successfully uploaded my app to the ALPHA channel. I can see the app inside the Quest 2 and it updates if I upload a new build.

But when I click "Start" the app does not open. No black screen appears or any kind of message comes up. It just doesn't open.

I need help figuring out what is going on, as I have tried everything I have found on the internet and everything I have come up with on my own.

I am using Unity 2021.1.f1 and Meta Quest Developer Hub.

Thank you very much.