Search shop by category

Hello I am trying to add a seach by category on the shop list but I can’t figure it out! Could you guys help me?

If you see on the website: https://box5742.temp.domains/~ethigrow/store-listing/ I have the box for search, for location and the radius search but i am missing the stora category! Any idea what can be?

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