I think you might not understand the Sonos system. It creates its own network. The app is part of that net. I had a similar problem in my business where we have about 5k square ft, my Sonos hub is on one end, and I have two speakers in between. My WiFi signal on my phone would drop on the far end away from my router, thus losing the ability to control the system (system played just fine) just no control. I added a WiFi extender to the mix and thought it would be a home run... not so much. While it did make the WiFi signal on the far end excellent, Sonos would not communicate with it as the Sonos net is proprietary. I called my dealer and they said to add a Boost... solved all the problems.