Thanks, Daniel! If after reinstalling the application, you’re still experiencing this issue, we have another suggestion for you to try.
At that point, you can try stopping the Roon Core, going to
rooncoredatabasefolder/database/registry/core and deleting all files that begin with endpoint and raat and restarting Roon- if after trying this, is there any change?
We’d also recommend using another PC device as a Core, just as a test. Prior to doing this, we’d recommend making a backup of your Roon data. Do the devices still disappear if another Core is used?
I’m interested to see how these steps go! Certainly let us know if none help.