My dad can't sign in

He hasn’t used the vex forum since the “upgrade” and now he can’t sign in. When he clicks on forgot password he gets link, but it’s just a blank screen.

Take a look at above. You essentially need to reset your password since the move to the new forum. Click the “Log In” button. From there, click “Forgot Password”. This will send a password recovery e-mail, follow the link, and set up your password for the new forum.