How to change your username, email or password
Usernames, email addresses and passwords can all be changed from Accounts Settings, found by clicking your name at the top right-hand corner of the site.
To change your username: Click on the change button on the Username field in Account settings. Please note that usernames cannot be changed more than once every 30 days.
To change your email: Click the change button on the Email Address field in Account Settings. Then click on the activation link you are sent via email.
To change your password: Click on the change button on the Password field in Account Settings.