Vudu App Not Sending HDR10 to TV

[ght]

So, I have an ATV 4K and a Sony 75X900F. My ATV is set to match range and frame rate, and my Vudu app is set to UHD. If I play a Dolby Vision title, the app sends DV content and I see the DV logo pop up on my TV. However, for HDR content that is not DV, the app does not output HDR to the TV. Also, When playing a non-DV Vudu title that says 4K HDR on the Vudu page, swiping down on the ATV remote shows it only playing as HD, not 4K. I tested with the iTunes Movies app, and it will send non-DV HDR content to the TV. I've tried restarting the ATV and the TV, but that didn't change anything. I even bought a HDMI 2.1 48Gbps cable just to be sure.

Any ideas what's going on?

 

[Just_Me_D]

If you haven't already, check out the tips found via the following link.

https://support.apple.com/en-us/HT208074

 

[ght]

I looked that over, but my issue seems to be with the Vudu app, not my setup.