Filtering problem

Hi,

before buying your plugin, wanted to try it. In most of the cases it is working fine. However, for those attributes which are not used in variations it does not filter. In our draft shop: https://bikeworld.hu/shop/
If you click on any of the two last filter options, it reloads but leaves all the products there… It’s strange, as all the other attributes are working well.

Any idea what am I doing wrong?

Regards,
János

https://www.ads-software.com/plugins/woocommerce-products-filter/