Thank you for buying our theme. We hope it will meet all your expectations! 🙂
To activate the search form, just check the related option in Customize > Appearance > Hero. Please find the attached screenshot.
However, if you want to search a specific profile field, this search form is not adapted. You have to use the BP Profile Search plugin. Note that this plugin should be already activated on your website as you imported the Dating demo.
In that case, I suggest you to edit the Search home form in Dashboard > Users > Profile Search.
Don’t hesitate to reach the plugin’s authors if you need more explanations on how to use this plugin:
Hope this will help you get what you’re trying to achieve.