Note: I just updated to the 1.1.6 but I was on 1.1.5 with the same issue. I've set up WiFi using BE800 as the main router and BE550 as an EasyMesh node at the other end of the houe. They're connected...

I've setup a mesh network with wired backhaul and I've tried setting up an MLO but it seems that only the main unit is transmitting the MLO SSID.