CC Sign-In will attempt, then close, then reopen. Lather, rinse, repeat.

Just got my new MacBook Pro 16" 2023 with M2Pro chip (if it makes a difference). I installed from my Time Machine backup, then updated to Universal, not Intel 64 apps, that work better with Apple Silicon.

I have a subscription to Adobe products through my school district. I have been trying to sign in to Adobe products on this computer like God intended, when...

"Sign-In Required"

I put in my credentials. 

From HERE: normally, window closes, and "Sign-In Required" returns. I still can't access any of my Adobe products, which I use regularly. 

I executed the solution that required me to trash and change some things under "Application Support", both in the regular Library and the ~Library. That got me as far as the EULA. I agreed...and then we went back to Lather, Rinse, Repeat without getting me to the EULA.

I executed the solution of getting rid of some Adobe items in my Keychain (like my user profile). Same thing: gets me to the EULA, then Lather, Rinse, Repeat without getting me to the EULA.

I am at a loss. Any help would be appreciated.