Our users do not have the capability to change usernames just yet but we would be happy to change the username for you. Just provide us with your original username and the username you'd like to change it with. Send an email at firstname.lastname@example.org.
Note: If the username is no longer available, we can no longer reuse it. You may need to pick another one. Also, please note that our server does not recognize usernames with special characters like #, $, & and etc.. so please make sure to provide alphanumeric character only.