I have Spotify Premium. For speakers: 2 Chromecast audios and a Google home, all on the same wifi, plus two groups created to allow mulitple speakers to play. Using various iPhones and iPads as remote controls.

The issue is that under devices in the spotify app, I only see three of the possible five. I used to see all five (the change happened around April 2018.) The devices show the google home, one chromecast audio, and one group. Missing the other group and other speaker entirely.

I have: rebooted everything, updated sofware, etc., etc. all the basic IT suggestions. To no avail. Problem persists on all remote controls.

I can, however, talk to my google home and tell it to play on those other hidden speakers successfully. So the system is aware of the speakers, just refuses to sho them on my devices list. Suggestions?