I noticed that yesterday it worked, but the prior 9 working days it didn't.
Been thinking about what I tried differently yesterday. I turned it off and on a bunch of times. I had a the Windows application syncing to the same onedrive account, but on that client this setting was turned off - so I turned it on with the same settings there. I never use the clients simultaneously - I've actually haven't started using on windows yet but it might have been started and exited on some of the days.
Is the setting per app or a global configuration? Could it be out of sync due to having many clients?
Anyway I say close this issue since it magically fixed itself, I'm happy. 🙂
And thanks for a great application!