How do I assign a domain to my Wix site?
If you have a premium plan and own a domain, you can assign a domain name to your Wix site.
First you will need to add the domain to your account using your preferred method.
To assign a domain: Sign in to your Wix account > from the menu at the top, hover over Subscriptions > click Domains > next to the relevant domain, click Manage.
Under Domain Connects To, click Change > select a site > click Save.