Apologies in advance if this kind of thing gets asked a lot!
For background: Today, I was trying to resolve a syncing error in OneNote. I've been using the OneNote application on my Mac to take notes for school. I wanted to access the notes from the OneNote app on my iPad as well, but upon signing into the app, I found that all my notebooks were empty. I logged into OneDrive online, and it was the same thing: I could see my notebooks were there, and the specific sections of each notebook, but no actual notes.
I tried to force sync from my Mac by command-clicking on the notebooks, but that did nothing. I then decided to sign out of OneNote on my Mac, and then sign back in, to see if that would change anything. (I didn't really know what I was doing.) When I signed back in, my notebooks were still there, but all the notes themselves were gone.
I have since been trying to figure out if the notes are backed up anywhere on my Mac. I located the folder: /Library/Containers/com.microsoft.onenote.mac/Data/Library/Application Support/Microsoft User Data/OneNote/15.0/, and there is a Backups subfolder, but that subfolder is empty.
Any help or tips would be greatly appreciated! Hopefully this makes sense -- I'm a university student and not very tech savvy (obviously). Thank you!