internet browser won't open a webpage!?

[Danny]

I purchased a WiFi extender WN2000RPT and I have it connected. All the lights are green indicating its up and running. But it says I have to go to the internet and type in "http://mywifiext.net" in the URL and when I do my internet says "oops! http://www.mywifiext.net was not found" this is the last step for me to fully complete the WiFi extender setup. I'd appreciate it if I can get some help!

[Boss]

You might need to call your internet service provider and make sure all the cables are plugged in the right ports in the router if that don't work try a Ethernet cable instead of wireless.