Hello Ruben,
The plugin is not developed as a one stop solution with all bells and whistles. I prefer to keep it simple and make most modifications possible by customizing the WordPress theme with hooks or custom css and javascript. In the end not every site is the same. That’s why there is so little to customize from within the plugin itself, but a lot can be done using hooks and custom css or javascript. Maybe this approach is not for everyone, but I don’t see why this should result in a one star rating.