I looked at the products and didn't read anywhere you would use it as a router. Anything you do with these outside what's in the manual is not supported.

Since you already have a router, use the second unit as a WAP. You won't use the WAN port but the LAN port. The WiFi there may be non-functional but it's a step in some direction. Google "How to use a router as a WAP" for more but again, since it's not a router, it shouldn't work. Embarkdaily embarkup