Chung50
CS = Customer Service/Support (if you click the text in that post it takes you to P+ CS).
Its not a firmware issue as the issue started 2 days ago irrespective of any specific firmware update and/or with any specific firmware version (it impacts all firmware versions/builds, including all builds of 14.0.4 and 14.1.4, etc).
Do not let P+ CS try and shift the blame to RokuOS - this was a server-side provisioning change for the RokuOS P+ app that disabled DD+ support (EAC3 & EAC3_JOC) but left DD (AC3) support intact (limited content).
If you get a FireTV device, I recommend the FS4KG2 (AFTKM) or FS4KMG2 (AFTKRT) - do NOT get the FS4KMG1 (AFTKA) as the 4K/HDR/Atmos provisioning is broken/incorrect and content does not properly play back (no DV only HDR10, some content missing 4K, some missing Atmos)
49rFaithful
The Hulu app does not support Atmos (on any OS/platform), just 5.1 (and only DD+ - no DD support).
Peacock links Atmos to 4K/HDR support/playback, so if the device isnt configured for 4K/HDR then you wont get Atmos playback.
The original FS4K's (Fire TV Stick 4K - model AFTMM released in 2018) Peacock app is NOT currently provisioned for 4K/HDR/Atmos (and hasnt been for 2 years now), so you'd need a newer model (see above).