Apple TV and Phantom I

[Anders]

Dear all,
Suddenly I cannot choose speakers when watching Apple TV. When I press the "Screen" button on the remote I only see the TV when going down to the Airplay symbol. Earlier I could choose my Phantoms, or other units.
This is what has changed:
- I have updated my router to an RC version (Synology, mesh system), weird things happened but over all now everything seems to work (apart from this).
- I can use my Phantoms with Spotify as before, no problem.
- The Phantoms and Apple TV are connected with wifi and have individual ip-adresses as before.
- I have reset the Apple TV, no change.
- Now I have to use the TV-speakers since I cannot connect to other airplay devices - sound horrible - I really would like to connect to my Phantoms.

Any idea?
/Anders