Minecraft Education Freezing at Log In

I am a NYC DOE teacher. I have been trying to log into Minecraft Education for several hours on my work computer. At first I thought my memory was too full so I deleted files until I had 100G free. Then deleted an re-installed Minecraft Education. Then I checked my disk utility and ran a first aid check. Then I reset my SSO attempts in my cache to 0. So far nothing has worked. I can sign in seamlessly on my personal Mac. I'm still running MacOS Big Sur and cannot update without my school's tech team agreeing. Please advise.