I would recommend that you start over, on the back of the device there is a little RESET pin hole use a small PIN and hold it down for about 30 seconds then it will reset the device to default.
Now once it is on default use a sepreate computer and CONNECT wirelessly to the NETGEAR_EXT then once it is connected then open a new web-browser window and type http://www.mywifiext.net or http://www.mywifiext.com and try again then finish the install. Thanks
Interesting, now you connected to the wireless name of Netgear_EXT on your lap[top right then opened up the browser and tried http://www.mywifiext.net or .com?
Got to make sure you connect to the default Wireless SSID name of NETGEAR_EXT that is the only way the link works.
Could you give me your Model number of the extender? Thanks
Ok, lets try accessing the IP of the device then. Connect to the netgear_EXT or directly to the unit then open the web-browser window then type http://192.168.1.250 in the address bar and hit enter.
If ti ask for a username and password user admin for the username and password for the password.
That should get you in, let me know if not. thanks