Hi Fr0stbyte_1,
You didn't mention if you are still an Apple Music subscriber, as that is one of the requirements for playing music with Dolby Atmos. Take a look at the excerpts from: Listen to Dolby Atmos music on iPhone - Apple Support
In the Music app
, Apple Music subscribers can listen to available tracks in Dolby Atmos.
Turn on Dolby Atmos
1. Go to Settings
> Music > Dolby Atmos.
2. Choose Automatic or Always On.
• Automatic: Plays Dolby Atmos whenever iPhone is connected to compatible headphones such as AirPods (3rd generation), AirPods Pro, or AirPods Max, or to speakers or receivers compatible with Dolby Atmos.
• Always On: Plays Dolby Atmos on any headphones or speakers. The Music app will attempt to play Dolby Atmos tracks on any headphones or speakers connected to iPhone.
Dolby Atmos will play on any headphones, but not all speakers will play Dolby Atmos as intended.
If you are a subscriber, you can verify that the setting to download in Dolby Atmos is still enabled:
Download songs in Dolby Atmos
1. Go to Settings
> Music.
2. Turn on Download in Dolby Atmos.
Take care!