Hey Mauro,
The function that takes data like the image from your site is called Open Graph. Our themes do have a simple Open Graph feature which can be enabled in Theme Options > Social > Open Graph. It will then show the Featured Image of a page or post when their URL is shared in sites that support Open Graph like Facebook.
Aside from the Open Graph switch, our theme has a Social Fallback Image feature which can be configured in Theme Options > Social > Social Fallback Image. For more details, please see the Info of the option.

You should only use 1 Open Graph system in your site to avoid conflicts. If you’re using Yoast SEO which has its own Open Graph options, you must disable the Open Graph option of our theme and use Yoast SEO’s OG options solely instead. In this setup though, you’ll need to contact Yoast SEO support or the plugin that has OG options because, at this stage, it is the third-party plugin that is responsible for the OG setup of your site.
With all that said, if the Featured Image of your page is not showing up on Facebook, chances are there’s an Open Graph conflict in your site. What you can do is either disable our theme’s OG or deactivate all third-party plugins or plugins that have OG options.
Hope that helps.