The plugin you have downloaded via CodeCanyon isn't always the latest version*. To be sure that you have the latest version installed the plugin comes with an auto-updater.
You can enable this auto-updater by activating the plugin on the settings page of the plugin. After you have activated the plugin you can update the plugin directly via the default WordPress update page (http://www.yoursite.com/wp-admin/update-core.php). If you don't see an update available, try to press the Check Again button.
If you have trouble updating the plugin via the auto-updater (some multi sites setups have issues), you can manually update the plugin via this page!
- WP Multi sites: If the plugin is on a WP network site and it isn’t network enabled, the auto-updater might not work.
- Broken Auto-Uploader: If you are using
Out-of-the-Box 1.7.3 or lower
Use-your-Drive 1.5.3 or lower
Share-one-Drive 1.2 or lower
Please download the latest version again via the CodeCanyon dashboard.
* Unfortunately for every update I upload to CodeCanyon, a dozen sites will automatically distribute the plugin illegally, which takes me weeks to take down. So I am more or less forced to let everyone update the plugin via the build-in WordPress auto-updater.