@Alexandre. I try to change the main deco with another one satellite and reconfigure but still main deco connect as Wifi even after reset and reconfigure. I Can't find a way where I can conect them...

@Alexandre. When connected again it stay in wifi and living room cable

@Alexandre. It was wifi as show in digram

I connected my router to the main deco S7 then main Deco to switch LS1005G and from the switch 2 other Deco S7 too but in the digram I found the 3rd deco connected to the 2nd deco and 2nd deco to...