[jt_ma]

Hi Mike
it's really a strange behaviour.

Let me tell you what I tested (my system: MobileSheets with macOS, iPadOs)
- macOS, IPadOs: Sync with Google Drive -> works
- macOS, IPadOs: Sync with OneDrive -> doesn't work app freezes during uploading first file (after deleting content of sync directory)
- Trying same with windows ( I downloaded a test version o Mobile Sheets) -> works with Onedrive 
- macOS, IPadOs: Changing private oneDrive Account to another account (OneDrive for Business)-> works 
- macOS, IPadOs: changing back to original private OneDrive Account -> doesn't work.....
- macOS, IPadOs: I used an older Backup of the library -> doesn't work

Doesn't seem so be a general Issue with Onedrive, but with my specific account with MacOs
But I have no idea what this could be. I removed the authorisation in my OneDrive Account and set it new -> no change...
I have a solution (using another OneDrive account) but it would be more than interesting to understand what's going on...
especially because I worked about a year with the OneDrive sync
Note: "doesn't work" means, Sync freezes during uploading the first pdf file
regards
Joerg