@David-TP It has the same problem in Acess Point mode, it works but from time to time it loses internet and some time it loses wifi signal. When internet connection drops light doesn't go red....

My Deco M4 is very unstable. Wifi goes down every 2 hours or so. I´ve tested my internet without the Deco system and it runs fine. My setup is: Router (ISP Vodafone) wifi off > wired to > 1st Deco M4...