If-So works with all the page builders. You simply create an If-So trigger and paste its shortcode into a text/shortcode/HTML block.
To create content using your page builder (unless you are using Elementor or Gutenberg), you need to create the content on a new page or post, and apply it into the If-So trigger using a shortcode. Please check out this guide for detailed information (including a video): https://www.if-so.com/display-post-and-pages-using-a-shortcode/
As you can see above, I don’t have access to any settings of the plugin.
Also, I don’t see anything related to the plugin (dynamic content tab) when I am editing a page, whether I am using Gutenberg blocks or Kadence blocks.