Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello this is my first time playing on this server, but when i try to make a account on https://en.nostalrius.org/#iwannaplay
It tells me that my account creation limit is reached !
I have not made any account before, so i dont know what is happening, like to get some help on solving this problem so i can play som vanilla :D

Regards Sonico

Try registering an account from another browser: Chrome, Firefox, Opera, Safari, or Internet Explorer. If not, try registering from a mobile device like a phone or tablet. Or try registering from a friend's computer, work computer, or public computer like a library.