HomePod Pair as AppleTv sound system

I bought two HomePods to replace my more expensive sound bar that went out. They paired easily and sound WAY BETTER than my old sound bar. They were also very easy to link to my Apple TV. The streaming sound is fabulous but the Airplay2 is not 100%. Sound from the general AppleTv (like pushing buttons), and apps other than streaming won’t play and even those require constant reconnecting to the HomePods. How do we submit these bugs to Apple to fix? If these final bugs get resolved, it will make HomePods a perfect solution.