My Devialet Expert 140 Pro is also shown in Roon as uncertified.
All software is updated to the latest versions (Roon version 1.6 etc.) and I have rebooted all the devices, but without success, the uncertified remark is still there.
The system seems to work without any problems and the sound quality has improved since the Roon Ready integration. So I am very happy with the integration of Roon, but it would be nice to see my Devialet as certified in Roon 