[Help] OneDrive Sync no longer working on F2-210?

[AndyB]

Recently I've been unable to carry out scheduled synchronisation between files on my NAS and OneDrive. It shows as connected, but brings back no details of the storage space, and the logs would suggest this hasn't worked correctly since some time in June.

If I try and create a new connection then I'm prompted to sign in, CloudSync asks me to confirm permissions, but then nothing, it just falls back to the Create Connection part.

Any idea what's going on?