Hi Nancy…Welcome to Styled Themes! The download for themes is located at the top of this page (when logged in) with the menu item “Downloads”. So for anyone who is on the Theme Membership (as you are), you get access to all the themes there.
If you are using the Lite version at the moment, it’s best to install the Pro one as a new theme.
However, with my new themes coming up in the future, I am working on a way to allow a direct upgrade from Lite to Pro without having to install both as separate themes.