By default we have added the default demo content under the importer option. If you want to install other than that you can install via the unyson plugin which contains the all the demo contents.
Refer the screenshot: http://prntscr.com/dl6mqv
Kindly refer our knowledge-base link http://wesupport.wpengine.com/knowledge-base/how-to-install-the-demo-content-via-unyson-plugin/ for how to upload the demo content via the unyson.
If you still have any issues, kindly send us your WordPress admin login and FTP Login Credentials through the right bottom form located @http://themeforest.net/user/designthemes so that we will check the issue and we’ll import the demo content from our end.