That's a great question! Being able to update your account's username is something you can do in the My Account tab. Once you're on this page under the My Profile heading will be the option for "Username."
Clicking on this link will bring you to a page where you can create your new User Name in the Enter New User Name field and repeat it in the Confirm New User Name field. Once it is submitted on this page you will be all set.
Frankie P. Community & Social Media Support
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