You have to create account with regular user name and password. And later, when you log in, you can create your own profile. There you give the EAC/LIN/WAC numbers and keep in your profile. You may say Email on/off, then you will get the notification by mail. You need the WAC number to create the profile. You can have one for EAD, AP, 485 seperately.
Hope it is clear now.