Backup to OneDrive (Office 365 Home license) failing with no AuthID error

I have created a backup scheme via the dialogues, and followed the AuthID link to MS and obtained the ID which was picked up by Duplicati and all seemed fine. BUT when I try to run the backup it says no AuthID and gives a link to get one, which I do and which then fails similarly. GOTO START (I’m old school) etc etc etc

Is there a way around this? Latest version of Duplicati (duplicati- off the website.

Seen how? The Test connection button on screen 2 is one test. Be sure to Save on screen 5.
You can Edit again to verify that all remained well. If not, a closer step-by-step may be needed.