OneDrive stuck on "signing in"

I am having this issue with my personal OneDrive (works) and university OneDrive (is hung up on "signing in"). In the past different combinations of closing OneDrive and unlinking / relinking have worked, occasionally I've had to reinstall which is not ideal because it I have to resync my sharepoint folders and remove old ones.  Trying to follow these steps to avoid reinstalling - I unlinked my university account and closed OneDrive. When I reopen OneDrive its opening the personal account version (there's only one app listed in my apps, though when both are running I've got ta grey cloud and a blue cloud in the taskbar). I tried to add a new account in OneDrive (using my university login), pointed to the old university onedrive folder, and that works but in the next step its saying that before I can back up my folders in OneDrive (university version) I need to turn off backups for my personal account.  That seems problematic... Is there a different way to link, or to tell it I'm going to run two OneDrive accounts at once in a way that will work? kcCodeMonkey your instructions seemed like the closest fit for my issue so hoping you have insight.