A simple but useful plugin that lets you to create promo codes for allowing access to file downloads on your WordPress site.
Ultimate Promo Code By CMSHelpLive Download Now
(If the link does not work)↓
Originals Link WordPress.org
How to Install Ultimate Promo Code By CMSHelpLive Plugin, Manually
Download Ulitmate Promo Code by CMSHelpLive plugin
Go to your Dashboard and locate Plugins tab. Click on Upload Plugin and specify the path of downloaded plugin in the text box.
Click on Activate Plugin
Plugin Not Working?
If any errors or problems with the plug-in then write comments.