If you received an email that says "You have reached deploy limit" then do not panic. It is simply a measure to prevent abuse of the platform.

You need to click the "Deploy" button to make the changes you made to your superblog live! 

The best approach is to make a number of changes (like updating settings, editing existing posts, publishing a new post, changing theme color, etc.,) and then click the 'Deploy' button once at the end.