What is WooCommerce API Manger?
WooCommerce API Manger is used to secure your software with API License Key activation, deactivation and automatic updates of WordPress plugins and/or themes. However it can also be used for some applications outside of WordPress as well, but we will be talking mostly about how to use it with a custom WordPress plugin.
You need to at least make sure you have at least PHP Version 7.00. Here's how you can check from the linux command line:
Type the above command and press enter and you should get results that look similar to this:
Alternative Solution to WooCommerce API Manager
You may have noticed this article isn't complete. That is because I decided to go with a different system for selling WordPress plugins on my site with API keys, WooCommerce didn't provide the level of support I needed and their documentation was poor. I discovered Easy Digital Downloads which was much simpler to deploy. Easy Digital Downloads(EDD) in combination with the EDD Software Licensing add-on and the EDD Instant Updater for plugins that I developed myself, became the ultimate solution for selling WordPress plugins outside of WordPress.org. If anyone is interested in how I did it, email me at email@example.com and I can assist you.