Clean your Media Library and your Uploads (/uploads directory) from the files which are not used in your WordPress anymore. The plugin has an internal trash and when removed, the files are actually moved there. Once you made sure your website works fine, you can empty the trash. Media Cleaner Pro is a very powerful plugin that took many years to perfect. For more information, visit its official page here: Media Cleaner.
Yearly / Lifetime
The Yearly Standard license is recommended. This license will always work as long as it is active. The lifetime license is, of course, active forever.
Discounts are generally not offered but if you are a happy user of the free version and want to help us in promoting the plugin (on social networks, in a blog post, etc), please contact us.