When you install included plugins that come with our themes, plugin might ask for purchase codes. If you use correct plugin purchase code(not theme purchase code) and activate those plugins, you will have access to auto updates and demo content of plugins.
Based on Stock License agreement between plugin authors and theme authors, we can't include plugin purchase codes in our themes. Because if we do, buyers will have access to all features of plugins without actually purchasing them.
Don't worry about it! You can still get plugin updates and we include our custom sliders in our demo content.
We always test the compatibility of plugins with our themes and include the latest compatible version of plugins in our theme updates. All you need to do, is to download the latest version of our theme and update plugins through our theme. Please read this article to find out how.