@David-TP I am trying to partially answer your questions. And thanks a lot for support, btw :) The diagram you created is correct with one small adjustment. "Poarta" si connected into a separate...

@David-TP Deco App log is in TKID240847851. Current topology attached. Switches used (2 of them connected directly to Main Deco): Switch D-Link DGS-108GL, 8-Port Gigabit Deco is in Wireless Router...

I have a system containing 7 Deco units (3 x M5 and 4 x M4R) - picture attached. Two of the M4R Deco units were recently added ("Living Room" and "Poarta" from the picture). I bought them as a pack...