Look through some of the recent Devialet posts and you’ll see others with the same issue, you have to recycle your Roon server, I shut everything off and restarted everything and it comes back, I don’t recall the order but once Roon resets it will get authorized.
Here’s the link I read to get my Devialet working, for some reason mine didn’t work quite as easy, so like I mentioned I shut down everything and then rebooted my Roon NUC and restarted everything and finally it re-enable, if that doesn’t work try posting to this link and see if anyone else has any suggestions, but it does re-enable:
I had the same ‘not certified’ message when I did the OS/firmware update, yet Roon RAAT still worked. After about an hour or so, the ‘not certified’ message just disappeared. So, at least for me, there was nothing I had to do nor did Roon RAAT stop working.