You are assuming you always get the same IP from your ISP...generally that is NOT the case. So it might have worked once, but there's no guarantee your ISP is reserving the IP info you wrote down for...

@KaZyKa Are you paying for a static IP from your ISP provider? If so, are you following their instructions on how to configure your router...many carriers will still use DHCP to assign a 'static' IP...

You really need to do the whole cable to be sure, ie both connectors and the cable too. Alternatively, if you can live without coverage from that origin, use a temporary known-good cable to feed the...

@slamjam If port forwarding works across your ISP router, it should work across the ER605, so long as the WAN IP of the ER605 is also set as the DMZ IP on the ISP router AND you ALSO port forward...

@KaZyKa If you want the router's WAN IP fixed, you should reserve that IP on the ISP modem for the MAC address of the WAN port of the ER605. Many modem's will not 'recognize' a device that it didn't...

@S-K What Omada setting(s) did you use to 'block' it? For what it's worth, I just create multiple SSIDs...one for 2.4G only, one for 2.4+5.8 and one for all. Devices are then given the password for...