Volume Control Not Working

[EternalNova]

Device: iPhone 11 Pro Max

OS: iOS 14.0.1

Spotify Version: 8.5.78.928

When playing Spotify through my Xbox One, I can’t control the volume from my iPhone. I was able to control it a month ago, but now I only get the default volume indicator as if it was playing through the phone, and the volume does not change.

[monk6]

you can no longer adjust the volume from your computer or mobile device because of the new update on Xbox that spotify allowed them to conduct. I am done using spotify until they fix it because the music is still loud on 5% and i can not hear my game play

[Guack007]

I have the exact same issue now, please fix this Spotify or I will cancel my service 

[Asean1]

Please follow this link and like the idea so we can get this feature back.
https://community.spotify.com/t5/Live-Ideas/All-Platforms-Cross-device-Volume-Control/idi-p/5045278#