I have something like 20 speakers from Sonos but within these speakers, I have 4 Sonos Play:1 that I CANNOT connect to my system anymore.
What should I do as I have tried every thing I believe and I have already lost too many hours trying to set this system up :-( 

I have seen so many bad comments about Sonos of people having problems that I am now wondering about this company’s efforts to solve customers issues.