Wifi Ceiling Speakers Disappear - Lithe Audio

[gerbull001]

Plan - Premium

Country - UK

Device - iPhone 13, iPad 14.8

Wifi Speakers - Lithe Audio Wifi Ceiling Speakers (x 3)

Mesh - 4 node Asus XT8

My Question or Issue

Speakers disappear from device list in the IOS Spotify app.

Tried clearing cache in Spotify App - doesn't work

Tried choosing local devices - doesn't work

Completely uninstalled the app and rebooted phone - doesn't work

The only way to get them to appear again is to turn the speakers off and on. When they are missing from the devices list they are still available on Airplay and the Lithe audio app is picking them up. It's just Spotify not picking them up but can airplay though Spotify.

Each speaker has it's IP address reserved as well being bound to a specific node. Because the speakers can be found on Airplay and through the Lithe app I can only assume there's some kind of issue with Spotify not refreshing properly. I've exhausted all possible settings changes as per other posts - help would be appreciated.

Thanks in advance