That theme provider booby-traps their code to prevent users from editing their code. It’s a very non-GPL thing to do and part of the reason we do not support themes like that here.
Non-GPL products like that are not welcome in the WordPress community. Official WordPress policy states that all plugins and themes that are publicly released are required to adhere to http://wordpress.org/about/gpl/
Any support requests for non-GPL products are usually ignored, in the interests of supporting the community and its freedoms.
Please consider using a theme from a reputable place instead.