I use kingcomposer also on my website and as it looks like, this plugin is abandoned, for months there are no updates, the last update was 5 months ago, also unresponsive support, their king-theme.com website also seems to be left to decay…I’m personally switching over to Elementor, which of course is extremely time consuming …if you have a larger website. Overall, though, it’s pretty shocking what these developers are doing, there are 100.000 websites with this plugin…and they are all doomed now…incredible irresponsibility what some developers are doing. Personally, I prefer to avoid any website builder plugins…or any 3th party plugins that can seriously damaging the website, even by Elementor I would never install it if I would have know-how to bulid the page without it, as the developers can simply stop working on a plugin..as it seems is here the case… and then you are in ass…