Sonos Controller loses connection with sonos dedicated network

Good evening all. I am new here. I am running the following sonos system:
- Modem + Router + Signal Booster + Bridge + 2 Sonos Play 5

I recently tried to update the sonos system and the update did not go through. It seems to have worked yesterday but the main problem remains.

Every day of so, I cannot play my music. I mostly listen to music through Sirius Canada Internet radio and can't see the channels nor can I play favorite stations. Somehow, it appears that the controllers (laptop, ipad or iphone) cannot connect with the bridge. I have not changed the network password or router. I have tried replacing the ethernet cable connecting the bridge to the router - still the same problem.

Every time I reset the modem, then router, then bridge, play 5 speakes, the system will work for a while (I would say a day) and the following day, same problem again.

I have also changed the channels from 11 to 6 to 1... it did not fix the problem.

Anyone can help in plain language?

Thanks a lot.