When I installed Roon Core, it recongnized the KEF LS50W speakers and I enabled these. And I was able to play music through these speakers. But after the speakers power down, next time I go to Roon or Roon Remote, the KEF LS50W speakers are no more available.
I tired restarting Roon Core, still same problem.
Likely tied to your other problem with your core being on wireless. As advised in your other thread switch core to be wired and then see if it improves stability.