Troubleshooting Filters 5: Issues with Product Category Sorting

Hi guys! I’m having some troubles with Filters 5 - so I’m trying to filter products by their categories (each of them may have more than 1), and it’s not working with the Finsweet attributes :( I originally found that the “categories” on top were purely link blocks so I changed them into radio and put it back to the form block (it now causes me trouble in opening the sort dropdown 😅). But after that, it’s still not working :( Nor sure if it’s because I’m nesting a second collection list for multi-ref?! Appriceate if anyone could help to have a look. Here’s the read-only link: https://preview.webflow.com/preview/masayoshi-66d4d4?utm_medium=preview_link&utm_source=designer&utm_content=masayoshi-66d4d4&preview=50b3e945a20aeac9fc1d3b2c7fa3dc81&pageId=664c683ebc69731fc2785e05&locale=en&workflow=preview