Nostalrius Begins - Quality wow vanilla realm (1.12)

Hi, I have a problem.

I go to http://tbc.nostalrius.org/ to register an account to play on TBC but they tell me : "You already have an account on this IP ******"

So I launch WOW TBC 2.4.3 and connect with my Nostalrius account but it doesn't work. Please help me

You (or someone else) have already created an account from that IP, which means you cannot create a new one. Wither find out what account you created (if you did it), or create an account from another IP address.

I ve got the same problem

i manage to play on this realmlist adress after having created an account on hellground website but im not sure to be on the nostalrius ptr, how can you explain this ?