Calendar widget using Flatpickr with finsweet filter attributes not workin

Design help Custom code
1

Hello, can someone explain why this is not working? I followed all the steps in setting up finsweet attributes and flatpickr calendar widget but the filter still doesn’t work.

https://preview.webflow.com/preview/lettrlabs?utm_medium=preview_link&utm_source=designer&utm_content=lettrlabs&preview=b54b9ecd926f55729407aa989d7f7908&pageId=669817d49a85a8634224f3f2&workflow=preview