How do I change my email address
Make sure you are logged in and go to your profile settings by clicking the my settings link at the top of the page. Open the Personal Data & Preferences window and scroll down to Your contact details. The you will find the form field titled Email. Enter your correct email address and double check it. You'll need it to recover your lost password for instance so it's important that you can access that email account. Don't forget to click the Save changes button at the bottom of the window and you're done.
Lost your password and can't access the current email account? Get in touch with firstname.lastname@example.org and supply them your username, old email address and new email address and kindly ask them to change it.