Thank you @connor , I rebooted Roon Nucleus One earlier and still issue - I can login to Qobuz outside of Roon so not credentials issue. I get this message when logging in via Roon.
Thanks, as it I discovered after much time, I had a space “ “ at the end of my Qobuz password and while Qobuz was OK with it Roon wasn’t, I changed password and all OK!