Roon and Samsung TV's via airplay? 55nu8000 and 65nu8000 not showing

I have a few samsung Tv’s in the house that support airplay - 65NU8000, 55NU8000, 49RU8000. I can see them on iphones as airplay targets, but not on roon. Roon will see a denon receiver that is on the same ethernet switch as the 55NU8000 (connected wired) as an airplay device.

Is there something special I need to do to get this to work?

thanks ,