WPBakery Page Builder Purchase Code/License
Your theme comes with a copy of the powerful WPBakery Page Builder, however its important to note, being bundled with a theme means that its not possible to "Activate" your copy of the plugin - but this has NO effect on how the plugin works
Activating the plugin allows you access to support and direct updated from the WPBakery team, so if you wish to purchase your own license so you can take advantage of this for whatever reason - you must deactivate and delete the version of WPBakery Page Builder provided with your theme, and install your own via Plugins > Add New in your WP Admin area.
Once done, you can use your new WPBakery Page Builder license to activate as you wish. For details on this see this article.