Main page content showing on Category->Subcategory

Greetings!
I did make my main page (define_main_page.php) with buttons which are linked with categories urls. When I click on the category what doesn't has a subcategory(s) the main page's content doesn't showing. This is the way I like it!
But when I click on the Category what does has subcategories the main page loaded first (on the top) and below subcategory's content. This is the way I don't like!
Any ideas how do I get rid of the problem?

I managed category images showing at top of main page instead of bottom according to this thread.
Any ideas how to get rid off main page at the bottom?
Any help or suggestions much appreciated.
Thank you.

We need to see your site live to have any hope of seeing what is going wrong with your page display. Internal category listing pages shouldn't show define_main_page content.

What happens if you switch back to the Classic template?