I have a very frustrating problem with my Bose Soundtouch speakers. I have 6 devices around the house. 1 Soundtouch 30, 2 soundtouch 20's, 2 soundtouch 10's and a compatible Bose soundbar with soundtouch built in. All used to work perfectly and I was very pleased. I could fill the house with music! About 4 weeks ago 2 of the speakers could not be seen by the soundtouch App. No matter what I do to reconnect, they simply will not reconnect. Sometimes the app can see them but it cannot connect. Interestingly if I run spotify, it can see all devices and I can play all them separately. Spotify doesn't have the ability to group up speakers so they have to be played separately. I've had the Wifi tested by the supplier and it is fully functional. I'm beginning to think that the functionality of the bose system is now diminished and it can only handle four speakers at a time. Does anyone share this experience and is there a known solution?