PowerApps does not work – Power Apps Review

I’ve tried getting into the app many many times. I use the app because my school uses it for rewards and i got a reward today and I tried logging in using my school email and a screen slides up and it stays white and loading. It’ll be loading forever like i can’t even use the rest of the app because it won’t load. I’ve tried deleting the app, reloading, even restarting my entire phone and it won’t work. I really need this app fixed now please Microsoft!!!
Review by Buck 16 on Power Apps.