This article will show you how to make the mobile site active on the Business Mobile Website Builder package.
Scroll down to the Create your website section and click on the Website Builder icon.
Click on the Login button next to the relevant package.
Click on Mobile site in the menu bar.
You will now be in the Mobile Site Editor section of Website Builder.
Click on the Manage link on the right hand side of the mobile editor toolbar.
Select Online from the drop down menu and press the Save button.