Unable import Demo Data

I am trying to use the Pet Animal store theme on a self-hosted wordpress setup. I have tried installing the theme both from the zip file and from the wordpress themes section on my setup. None of the setups have the import Demo data option as shown here on this link https://themescaliber.com/demo/doc/free-tc-pet-shop/

Can you please guide me on how to get the demo working as I want to use this theme for my website.