1. Go to your Account
Click on your name in the top right corner, and then select Account from the dropdown menu.
2. Click on Settings
Click on the Settings tab on the right-hand side:
3. Click on Enable Custom Domain/Change Domain
4. Click Change Domain
5. Enter the same information you had
The settings you enter will vary by your type of domain masking.
Enter the same information as your initial set-up, either as a domain, or sub-domain.
After you've done so, click on Save Domain.
6. Click Test Settings
Click on the Test Settings button at the bottom of the page.
A few different things can occur next:
A Success Message
This means everything is correct, congratulations!
Note Quite - A Name Records
This message means you either have Domain Forwarding enabled, or you have too many A Name records on your DNS panel for domain masking to work.
Not Quite - Please Check your DNS Settings
This message means that your domain masking is not set up correctly.