When you get a copy of Kalium, it does not include support for the plugin, premium pre-made sliders. Plugin updates will be included remotely in our server so you can update the plugin by going to Appearance > Install Plugins area once the plugin author releases a new update and we test the plugin in our theme.

Please see theme changelog every time we release a new update to see if there is a new update for the premium plugins too.

To update the plugins, follow the instructions on this article.