Jasper Demo Theme

I recently purchased and installed the Highend Theme. I then used the importer to obtain the demo themes. Specifically, the demo theme named “Jasper”. For unrelated reasons, I needed to uninstall the Highend theme. I have since re-installed and reactivated the theme, utilizing the original files that I downloaded from the MOJO marketplace. Unfortunately, the “Jasper” demo theme no longer shows up as an option. How do I reinstall the demo files? I have visited the MOJO marketplace and downloaded the latest files. I even installed the “WordPress Database reset” widget as recommended in a separate post. None of these actions have made the “Jasper” demo them reappear. Any suggestions?