There are three premium plugins are bundled with FamiLab theme and do not require additional licensing in order to use with FamiLab theme. They are WPBakery Page Builder, Elementor Page Builder and Revolution Slider plugins. We purchased them from codecanyone.net and included them in the theme package. We are not allowed to include the license key for each of them. If there is any update, we are accountable for updating the theme with the newest version of plugins. In fact, the license key will not help you anything even updating plugins to the newest version. Only direct buyers can do this. Because we provide those with the themes; therefore, we will take care of updating them for our customers. Just take a look at the link by the author of plugins to see more.