Hi!
The template you are using is full off javascript errors. I have managed to fix some of them, but there are still missing files and references. As I commented out the unneccesary code then the javascript errors disappeared and the search started working. (it was in the templates custom-functions.php file)
Also, there is something in the template is blocking the $ jQuery reference so some parts of the administrator area are not working correctly.
If you are planning to install other plugins then you might experience issues, as there are still some problems remaining in the template.