If you’re having issue as below, chances are you’re trying to install the wrong zip file.

Unpacking the package…
Installing the plugin…
The package could not be installed. No valid plugins were found.
Plugin install failed.

Screen Shot 2015-07-10 at 8.08.29 PM

After downloading the plugin from CodeCanyon, the zip file that you download is not actually the zip that can be installed to WordPress. Instead, there’s a file located inside your original download zip which is the file that can be installed.

Here’s a video showing where the plugin’s installable zip can be found.