|Maybe, the Netgear support guys told you, to first reset your router to factory default settings and then reconfigure the username and password for the authentication at your internet provider.|
In that case, the wireless settings are lost and must also be configured again. That means, that the password, as you call it, isn't correct.
So recheck the wireless settings in the routers setup.
The original poster should always write the last response !!!
Let us know, if the problem is solved !!!