It shows an error message or can’t connect to the site because of technical problems. For this web address to work, the device needs to be physically connected with an Ethernet cable or your wireless connection with the Netgear Nighthawk WiFi Extender.www.mywifiext.net is a way to connect your WiFi range extender to your home router as part of the Netgear Nighthawk setup. Even though it’s best to have all of your devices connected to the internet for the best experience, there are times when this isn’t possible.