4k Streaming Stick has Atmos for most apps, but not Rakuten or Paramount+?

I have the Roku 4k Streaming Stick connected to my Sony soundbar and I get Atmos through the main apps I use (Netflix, Apple, Disney+) but not for Rakuten or Paramount+.

My LG supports Atmos (but it's a poor imitation of Atmos) and so the Atmos option shows on Rakuten through the TV. But when I stream through the Roku, the Atmos option is no longer there.

Any tech experts here have an idea how to get Atmos on all Roku apps?