Hi,
You need to set up a full theme please follow the below steps
Go to Dashboard >> Appearance >> Get started
Before click on “Run Importer”, first you need to install Katib Writers Pro Posttype plugin and contact-form-7 plugin.
Click on “Demo Content Importer” and then “Run Importer”.
Please take a backup if any data is available on your site.
You can refer to the documentation for a better understanding.
Here is the link: https://themeseye.com/theme-demo/docs/katib-writers-pro/
We hope this gives you the information you need.
Please let us know if you need anything further and we would be happy to help.
Many thanks