One Click Demo Import is the easiest way to allow a new theme user to set up their site to look just like the theme demo. In less than a year it became one of the most popular plugins in the WordPress repository (currently at 7.000.000+ downloads). It has become a de-facto choice by many theme authors. Many of them have already integrated with OCDI and are recommending it to their theme users.
It is possible to use the plugin even if the theme doesn’t support it out of the box, but the experience is not optimal, because you as a theme user will have to find all the files and manually upload them. It takes more than One Click to get to the fully working and configured WordPress theme demo. This is suboptimal.
The best thing you can do is that you contact your theme author and let them know about this plugin and how to implement it in their theme.
Here is an example of the email you can copy/paste (or click here to auto-populate the email):
Subject: Please configure one click demo import in your theme
I am using your theme and it’s working great but you could make it even more user friendly if you implement the One Click Demo Import plugin: https://wordpress.org/plugins/one-click-demo-import/
The easiest way is to go to the One Click Demo Import settings page: Appearance > Import Demo Data and click on the theme author’s link. This will usually take you to the theme author’s home page, where you should be able to find the contact information.