To update your email address, please click on your profile picture and select the Settings option, and select “Profile” from the Account Settings section:
Scroll a little bit down and click “Change“ next to your email address section:
Type your email address into the "Email address" field and press the "Save" button.
A confirmation email will be sent to the new email address to verify that it is valid. Check the new email for a confirmation code to complete the process.