A common issue that can occur with users new to installing WordPress themes is a “The package could not be installed. The theme is missing the style.css stylesheet.” 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.
Find the theme files you have just downloaded from ThemeForest. If you have downloaded ‘Installable WordPress File Only’, then you do not need to unzip the file. Just choose this .ZIP file.
If you have downloaded ‘All Files & Documentation’, you have to unzip this file. Therein you will see a Main Theme folder. Open this folder and choose theme-name.zip file.
You can also find detailed installation guides for each theme in our help center.