— I'm not sure what the problem with onedrive is, just been through the logs and I haven't made any real changes to it since Christmas and it seems to work for me.
I do recall an old issue with the onedrive API where the first request after authentication would throw a permission error, but nobody has reported this issue to me so I'm hoping they fixed it. If you try pressing the refresh button on the dialog does it always stay stuck on "Failed to refresh[...]"?