Right now it actually looks like the Spotify people have realized that they have an issue here and have an open case that they looking into. I have got two notifications like this with posting them for a while: "We haven't forgotten about you. Our best tech folks are still looking into this. We'll be in touch once we have some more information."
If you have players in your Connect list that are on other locations that you can't get rid of, please email Spotify support (email address and ticket number earlier in this thread) and tell them this bothers you too.
After a long time Spotify "higher support" just found out that this is not a bug, they just don't have the feature and recommend me to reply to another thread on their community.... Aghhhsasaa! See answer below. I don't think they really care. If a lot of people try to get access to equipment in stores and plays loud music there now and then... stores will probably be very restrictive to give access and then just tell them you won't by things without testing...
Thanks for coming back to us again. We hope you're well.
We've heard back from the tech guys and they are advising that right now we don’t have the ability for users to remove connect devices that are connected to their account. There just isn’t an interface to do this. It’s not a bug, we just don’t have the feature.
unfortunately I don't think that's enough, as that still means anyone who have had access to your WiFi an Spotify Connect enabled device will have the possibility to play music in your home at any time and you can't do anything about it. I think connected players must be purged from all accounts in regular basis, like every 12 hour or so.
Re: Can I delete a Spotify Connect device from the list
I had Spotify premium and was using my iPhone and connected to Sonos speakers.
I had no idea that 5 months later I was still connected to those Sonos speakers when I was miles away. Then one day my playlist was messed with and I found that Sonos had been an active device. I signed out everywhere and restricted access.
Re: Can I delete a Spotify Connect device from the list?
It's just insane you haven't fixed this yet. It was, as far as I can see, a requested feature as well, causing severe problems to everyone else. From a security perspective, it is highly questionable that you do not purge "guest devices" on an account. And furthermore, are not providing a way to disconnect guests on my own account. The "log out on all devices" doesn't do the trick. People are still able to play music on my system while being hours away from my home.