My mom set up a wifi router with WPA2 encryption. I know the password, but when I enter it in, sometimes it will accept the password but still say it can't connect to the network. Other times, it won't even accept the password. I know for fact, beyond the shadow of a doubt that I have the right password. Any suggestions? This is f***in pissin me off that I have to use my neighbors sh*tty wifi when I have a router 10 ft away. Please help.