@David-TP In addition to the network cable connection with the ISP, a Tplink TL-SG108 Switch is also connected. In this Swtich are connected cabled IP cameras, hub iOT and Alexa.

@Jamac i have the same problem. After power outage, Deco M9 show a solid red light. To solve that i need disconect both ethernet cable from main Deco and reconnect only the ISP internet cable. After...