Hello.
If you have an account, and mistakely forget the password. There is no need to multiple accounting because it is ban able. You can contact the leaders of IV:MP here. Send a forum PM to him with all the information and he will re-set your password or do something for you.
If you have an account, and forgett the password and then make a new account, you will banned when you will be cought. Then you have to make an unban request, and have to wait until you get unbanned. So beware by doing it.
Now, Contact a IV:MP Division leader, Send him all the information with your account (the one who's password you forgot), and wait until they tell you what to do.
Here you can find the leader of IV:MP and of all the divisions.