Uku theme – related posts not working?

Hi,

I have just purchased the Uku theme from your website. I am using a fresh WP installation (latest version), I have connected the site with Jetpack and tried adding “Related Posts” but it is somehow not working?

It shows them when viewing from the Customizer preview, but whenever I save and go view the site “live”, they do not show up. The area is just blank. I have checked from multiple browsers+computers and the related posts are missing from all?

What can it be? Jetpack is correctly connected and I’ve also added the “Sharing” buttons without any issues, that worked perfectly.?