filters don’t work

Hello there, first thank you for proposing a free filter plugin.
I have installed the plugin on my wordpress site along with a theme named “uncode”

https://willychataigner.com/uncode/homepages/06130-boutique
it seems that the filter does not function and i don’t see why???
Would you have any clues?

Thanks for your reply

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