@dktr The device account is not necessary if you can reset the omada devices in hardware. After resetting you will be able to adopt these omada devices to the new controller.

@Brandon1597 It's called Policy Routing. Check this guide: How to configure Policy Routing on Dual WAN Router using the new GUI

@Terran158 EAP may not be the best solution. I will recommend CPE to build the point-to-point connection. So the basic setup is like this: Main building router--CPE1)))((( CPE2---Extend building...

@JoeSea Per my understanding, the Mesh unit will be forced to use the same channel as the main root AP.

@dfalessi It's on ER605 web interface->Network->LAN Check this guide, it's for wireless router but basically the troubleshooting is the same for wired router:...

@dfalessi Maybe IP conflict. Check your PC IP when it is connected to the WAN1 cable directly. If that is also 192.168.0.1/24 subnet then you have to change the front end router's LAN IP, or change...