So still nothing on this? I'm dealing with same issue. I get Atmos from Netflix, Disney+ and others, but Vudu is a no-go, even when it says it's playing in Atmos in the app.
I was finally able to get it to work by buying the new Roku 4K+ stick and using one of the HDMI ports on the Denon instead of one of the TCL tv ports and it now plays Dolby Atmos on the Vudu app. That is why I am still a believer that something is wrong with the Vudu app and the firmware for the TCL tv.
This is a bug between the Vudu app and Roku TV 100%! This is pathetic service, everyone here and Vudu just point the finger at the other guy and blame it all on them.
FIX IT PLEASE! YOU HAVE HAD PLENTY OF TIME BY NOW!
JasonShud , hate to say it but the solution I found to work was to get the latest 4k Roku stick and plug directly into av unit. It will then play atmos sound for you.
