You are able to change your account email by going to your "Security Settings" and on "Email" section, click update. You will be sending a verification code on your new and old email and by entering the code you will be able to change the email address.
1. Find the icon on the top right and hover over your profile tab
2. Security Settings
3. Click on "Update" on Email, send yourself a code that has been sent to the new and old email. You will be able to change email address