Can't remember e-mail.

Username is Synchromanica. Apparently I used a different e-mail account to make that one that I don't know about. Can provide info to prove it's me but I need to switch the e-mail that's being used for it to one that I currently am using. Thanks.

Apparently the e-mail no longer exists or something as it doesn't recognize it so is it possible to just answer some security questions or have my ip checked or something?