Hello, @Vaporizer,
I have just checked your site now and it is working perfectly fine for me on my mobile, please watch this video I have captured for you, the filters are simply clicking and working fine on category pages.
https://www.veed.io/view/7ad598f5-d765-4951-9547-4ec93c7fc8d3?sharingWidget=true
Regards 8Themes Team.