Forgot WiFi router password, after multiple failed attempts now locked out

I forgot my WiFi network password while trying to join my new ipad2. Tried multiple combinations of my usual passwords unsuccessfully. Now as soon as I attempt to input a password, the "join" button is unaddressable (greyed out). I presume I have been locked out after the failed attempts. I have reset network settings but am still unable to attempt to join. My original iPad is connected and running fine. Is this a router security issue or an iPad issue?