After communication with TP-Link via e-mail, I received beta firmware for the X50-5G and the Guest WiFi appears to work as intended while the Ethernet Backhaul is engaged. I will monitor the...

@David-TP I have received the e-mail, thank you.

@Alexandre. I have done some troubleshooting with the following, isolated setup (that is to say, no other devices are connected by wire): X50-5G ---(ethernet)--- X50 #1 using a prefabricated 1,5m...

@Alexandre. It is an unmanaged TL-SG105. The switch has been in place since Day 1 without any issues. There is no switch in the new backhaul link that causes problems; please read my original post.

Hello! I have been running a mesh network at home using a Deco X50-5G as my router (relying on its 5G connection for Internet) and a three-pack of Deco X50s as satellites around the house. The...