AppleTV+ Sound not working
I've watched movies on itunes, PBS, youtube etc. I opted in for 7 days to try appleTv+ and the first show I try the sound is not working, some sounds come thorugh but not voices. I checked hdmi cable verified its 2.1 ccertified, even tried swapping it and running apples hdmi checker - all good. I've verified that quick start is on per the apple help section. all other devices FireTV, BlueRay work fine. I have a Denon 3500h receiver. Any suggestions - appreciated.
Apple TV 4K, tvOS 14