Apple TV Siri/Microphone

[Will_Price]

This thread already covers this topic in detail:

AppleTV OS 15 Compatibility?

V7.1 is releasing now. The initial 7.0 release contained a whole new method for ATV control built from scratch. It’s a method called Companion, but does not (currently) support Siri voice, media feedback, or keyboard. The new 7.1 release contains yet a third method! We had planned from mid-Summer to build this in two stages as we did. While this method was much more difficult to build requiring far more effort, it was able to take advantage of our many years of ATV control refinements such as…

As far as any specific issue to your system, @CaliMed that is not something diagnosable in a forum since it is probably related to the model of your ATV or what device(s) you added in Roomie.