Hello,

I've purchase TP-Link Deco M4 (3-pack) few months ago and since I'm having this issue. 

One of my node is connected with Ethernet, mode backhaul, directly to the main node. 

I don't know why, the mode backhaul regularly disconnects, and the node switches to Wi-Fi. 
The issue is that the Wi-Fi signal for this node is really weak due to a thick wall in between the node and the main. 

And the node will not go back to backhaul unless I reboot it. 

This is really annoying. 

Can any one help on how to investigate this issue please ?