I add more info: the red arrow indicates are strangers'. these days that red arrow indicates are NO ONE at home.

After setting up the deco, I found something weird. The App shows some connected phones that I don't know. Most of time these were not connected but they did. I am sure that I never share the...

Hi, Sorry, Correct my illustration :

Hi, I illustrated more as shown below: P.S.: If there is no 2nd IPTV, the connection is working fine.

@TP-Link Here you are. The model name is described on first line. Let me know if you have any question.

@TP-Link I can answer partial of those questions you asked : 1. Yes, I can repeat the hangs up issue after adding a child node everytime. 2. Switch : TPLink TL-SG108 3. ISP modem : I will provide...