Nikof

I started playing again after a while (I was playing on Darrowshire server on August), when i try to log in again i get a message that tell me that the account has been closed and is no longer available. I saw in an other post that this problem is caused by a realm merging and the only thing to do is create a new account. Is that true? I mean, i realy cant use again that email / username to log in again ( i dont want to save the account but just the username and mail)?