Filter on one page, shows all results

Hi

I think i dont know exactly how to use this plugin.
I have on my website : https://www.xtclights.ro/categorie-produs/led-bar-atv/
a few product categories. I have the sidebar with MDFT on all pages that have products.
When i apply the filter on a category page that has lets say 5 products, the filter shows me all the products, included from all categories ( that are not displayed in the present category page before applying the filter ) .

How can i make it filter only through the 5 products displayed in the present category page ?

Thank you
Alex

The page I need help with: [log in to see the link]