The NPMB login security script will allow you THREE tries to login. If you fail on the third attempt you will be locked out from trying again for 2 hours. So, if you can’t remember your login credentials, use the “Lost Password” link below to reset your password BEFORE you get locked out.
If you get locked out for 2 hours, and then come back in 2 hours, and fail three times again… you will be locked out for a month. This is a necessary security measure and is not meant to cause legitimate NPMB users any inconvenience. If you are an NPMB user and need help, use the contact link near the bottom of the page to request it.