Home automation to airplay music from my Apple TV to my Denon Receiver no longer working

I have several home automations set up to airplay music from my Apple TV (home hub) to my HomeKit compatible Denon receiver when I arrive home and at certain times of day. These would automatically turn my receiver on when run - perfect! They have now all stopped working. My receiver doesn’t turn on after they have run and I can see from my phone’s “Now Playing” on the control centre that the Apple TV isn’t actually playing the music - even though the correct track is queued up (even when I manually press play here it will not play or turn on my receiver). This seems to have happened since updating to Apple TV 26. My automations currently have my Denon receiver as the “play” device (which was working). I have tried swapping this over to be the Apple TV as the “play” device but that doesn’t work either. Curiously, I have a siri shortcut on my phone for whenever I randomly fancy playing music that sets my phones playback destination to my Denon receiver and then lets me choose a playlist. This still works fine and will turn my receiver on when run. Please does anyone have any ideas?! Coming home to music is one of those little touches that gets me through the day!