No HDR from AppleTV+ app on Roku
Can’t get HDR10 or HDR10+ (beware, no Samsung TV supports Dolby Vision) from my AppleTV+ app on 4K HDR Roku Stick connected to 2023 model Samsung OLED TV. This problem only occurs on Apple TV app; I get HDR10+ picture from Amazon Prime, HBO Max, Netflix — no HDR only on Apple TV+. So do NOT give me generic instructions like checking cable, change HDMI inputs on TV to Plus (10 bit color), checking display type settings on Roku, or that all software is up-to-date! No HDR only on Apple+ (but I do get 4K UHD on Apple+).
I reset the Apple+ app in the Apple+ settings, deleted and reinstalled the Apple+ app, power cycled the Roku, and still no HDR.
Anybody else have this problem or has a solution, or further trouble shooting steps that do not require buying new equipment?
3910RW,