iPhone 5S, Windows 10 HP laptop
iOS 12, Windows 10
My Question or Issue
We have a Spotify Premium Family account for three family members, and own two Sonos speakers in separate rooms. I used to be able to play Spotify music straight from the Spotify app in both rooms, but recently Spotify stopped displaying the speakers under "Devices Available". This happens both from my iPhone 5s and from my Windows 10 PC.
From the Sonos App, I can see both speakers correctly.
The strange thing is that my wife and daughter can see both speakers from Spotify from their respective devices (iPhone 6S/7 Plus).
I've tried all obvious things like rebooting my iPhone; re-installing the Spotify app; dis-/re-connecting the Sonos speakers; rebooting the modem etc, but all to no avail.
The problems seems to have started around the same time when our daughter got her first iPhone last week.
Any support on this issue would be greatly appreciated!