My username is already in use when registering? Sarah Mitchell June 25, 2018 15:55 Follow If someone else has already chosen this username. Please pick another, usernames are secured on a first come first basis. Related articles How do I change my registration details I need to change the name on my order My email address is already in use when registering? I've purchased a ticket(s) from someone else/third-party site, are they genuine? Can I change my password? Comments 0 comments Please sign in to leave a comment.