How to Use Positions in Nicepage Joomla Extension correctly

Hi support team,

I have one problem. Obviously I watched the video https://nicepage.com/doc/article/6700/.
I create 3 custom positions in post/blog template in NP for Desktop, as the video above. Export to joomla. That's all right. Module position exist.
But in joomla, even if I don't insert modules in custom positions created with NP, when I see a post, an empty space remains, even if the empty module position itself should collapse. How is it possible? Artisteer have very simple modules grid and each position will be hidden if it empty.
Why don't you create a template as an artisteer with its default positions to simplify your life and approach your theme builder?