Dolby Atmos playback

Hello there! My Apple TV 4K unit has stopped playing Dolby Atmos on all of the movies that I bought from the Apple Store. It plays Atmos titles for Netflix, Disney, and Prime Video just fine. I played the same bought movies through AppleTV+ app on the Roku, and it plays the proper Atmos soundtrack just fine (ironic isn’t, the Apple Movie purchased plays perfectly on my Roku 4K player; while my Apple TV 4K is not able to play it). The Apple TV 4K plays it as “Multichannel” which is not right. Before the last update, my Apple TV 4K played the same movie in Atmos, just fine, but after, … multichannel garbage. I’ve swapped receivers (yes, both receivers are 4K, Atmos, hdmi2.1, and hdcp2.2 certified).Does anyone have the same problem? Please let me know.