How to Manually Install Commercial WordPress Plugins via FTP
Any WordPress commercial (or paid) plugins require that you install them manually via File Transfer Protocol, for example. This process isn’t as simple as installing a free plugin, but WordPress will let you do what you need to do.
Follow these steps to install a plugin via FTP in your WordPress installation:
Download the plugin from the source to your computer.
Commercial plugin developers provide you with links that you can click to download the plugin files — usually, in a Zip file.
After you download the plugin to your computer, if it’s in a compressed Zip file, unzip it to access the uncompressed files.
If the file is zipped (compressed), use a free web application (such as WinZip) to unzip the plugin.
Connect to your server using your preferred FTP application.
Navigate to the wp-content folder within the WordPress installation for your website.
In the wp-content directory, find the plugins directory; upload your plugin to this location via FTP.
Congratulations — your plugin is installed, but you still need to activate it.
Choose Plugins→Plugins on your Dashboard.
The Installing Plugin page appears.
Click the Activate link that appears below the plugin’s title.