filter woof_main_query_tax_relations not working

I want to make the category filter with logic “AND”, so I’m using the code from your website: https://products-filter.com/hook/woof_main_query_tax_relations/
Still – its using logic “OR”.
In the page:
https://outsiders.getraffic.dev/shop/?swoof=1&product_cat=landing-page,must-have-summer
category “Landing page” have only 1 product and category “Top Items”(must-have-summer) have 20 products. If I choose both – I can see 21 products!

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