A common issue that can occur with users new to installing WordPress themes is a "Broken theme and/or stylesheets missing” error message being displayed when trying to upload or activate the theme. This error message does not mean that the theme you have purchased is broken, it simply means it has been uploaded incorrectly. Luckily, there is a very easy fix.

You should go to themeforest.net , go to “Download” tab and download the theme again, then unzip the zip file and upload and replace the theme folder with your current theme in “wp-content > themes”. It’s better to make a back up of the old version and delete it from “themes” folder first.