BOTH root router and WDS router need to support WDS.
No need to do anything on the root router, just need to setup on the WDS router. From now, everything just on this router.
- Set IP address of the WDS router: Advanced > Network > LAN > IP Address. (default: 192.168.0.1. If root router is 192.168.1.1, then you can set this WDS router IP to be: 192.168.1.2). Restart.
- Turn off DHCP server: Advanced > Network > DHCP Server > Uncheck enable > Save
- Go to Advanced > System Tools > System Parameters
- Find WDS settings, choose 2.4Ghz or 5Ghz.
- Find the root SSID after scan, input Wifi password of the root SSID. Then Save.
- Better to change SSID to be different with the root SSID like "Your Wifi extender"
- Setup bridge: Advanced > Network > IPTV. Enable all and change ISP Profile to be "Bridge". LAN1, LAN2, LAN3, LAN4 all should be "Internet". Save