First of all, I installed this on a dummy website for test purposes. It was installed on http://vampire-rpg.info . I have uninstalled it. Please re-set the license for that one.
On your website, it clearly says that if the plugin is purchased now, we will get all future updates for free. I’m not concerned about support, however, I would not have bought 5 licenses had I known it was only for a year time. I have taken a screenshot of it. However, here is a link to the page, which shows a “special offer” at the bottom: https://wpeden.com/minimax-wordpress-page-layout-builder-plugin/ I purchased this plugin based on that representation.