After upgrading my router to the firmware 2.0.0 0.10 v6041.0 Build 240708 Rel.13164n, local network devices couldn't get the IPv6 address, while the IPv6 seemed OK on the router web interface....

@David-TP Happened again today. One of the M4R was shut-off and powered two days ago as I had to move it to a slightly different place in the same room. Nevertheless, the two M4R were put offline at...

@David-TP Happened again today, both the M4R Deco became suddenly offline - red led blinking. Had to restart them. Unfortunately, the cables are in the wall - cable between Archer and TL-SG108 #1 and...

@David-TP brief update, today the Deco M4R I had updated to 1.7.0 beta firmware was blinking the red led. The other M4R with the latest stable release wasn't affected and was still working. I had to...

@David-TP Everything is working fine so far. I've updated just one of the two M4 to verify if it will improve over the old one. I've had the last red light blinking event last week, so I guess it...

@David-TP Thanks for your reply. Here is my network topology. As you can see I'm a loyal Tp-Link customer :). Everything is connected through the ethernet backhaul. I am not leveraging the second...