How do I change my Wix username?
To change your Wix username: Sign in to your Wix account > hover over the user panel at the top right of the page > click Account Settings > next to User Name, enter your new username > click Save Changes.
You can also change your email and password on this page.
You cannot change your username to one that you have previously used or that someone else is using. It must be a unique username.