Do you remember the e-mail address you used? If you do, you can log in, click on your name, select Settings from the dropdown list, and change to the right one. After you update your profile with the correct details. you should be okay.
If you don’t remember the e-mail address you used to signed up with us, we ask that you notify us so we can erase the incorrect user, and then you can sign up again with the correct details.
Please let us know by emailing us at firstname.lastname@example.org, or just contact us through our messenger service and we’ll get back to you ASAP.