@networkidiot You can look at this thread for details on connecting three buildings with CPE510. To connect LAN devices you can use a network switch from TP-Link business line - details.

@Ondy 169.254.79.150 is a link-local IP address. Most probably your computer didn't receive an IP address from the ER605 DHCP server.

@Luca5chv When configuring the RE in AP mode you can refer to this guide. You can set a static IP address for the RE so its WebGUI can be accessed easily by its IP address (http://192.168.0.254 for...

@Danny1106 When tte RE505X is connected to your main router with an ethernet cable it shoild be configured in AP mode - use this guide. In AP mode RE505X can't be used in mesh network with your main...

@Noli1 If your main router LAN IP address is in 192.168.1.0/24 subnet you could set RE3000X with a static IP address 192.168.1.254 for better experiance and easier access. Switch your RE3000X DHCP...

@techdoubts Here's a troubleshooting guide on that matter. If you have 20 wired clients that means you're using an additional hardware like network switches - you can isolate them and check if they...