Are all of your Sonos players wired to the network? If so, then turn off the radios in the sonos players. There's lots of info on the interwebs on how to do this.
If you have a mix of wired and wireless, then the easiest way to make the system work is to use a boost. Wire the boost to the network, leave the rest wireless.
You can play with mixing radios on and off with wired and wireless units but it's trial/error/PIA.
I'm Not an engineer, but I play one on TV. My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.