I need change my user name in site but dont know do that. I create multiple accounts because dont receive email for confirme my account. Please help i need change my account name for Chavolatra nick name

Your account name is already Chavolatra, why would you need to change it? Anyways, I don't think you can change it. Maybe you could contact the site owner but he/she might not be able to either.

I already changed my username a long time ago.