Hello, I have exactly the same problem like FinnJackson
I recently customised the settings for Jetpack, Related Posts, by using the menu accessed from Plugins, Settings.
As I finished my changes I noticed the text, “You can now also configure related posts in the Customizer. Try it out!”
So I decided to try it out.
I changed ONE thing. I changed the “Text to use as Headline” from “Related” to “Related Posts:” and clicked “Save & Publish” and doesn’t apear any related post.
The theme that i’m usuing is NUCLEARE.
An example post http://nailsrooms.com/taking-a-photo-how-to-create-a-perfect-photo-of-nails/
Can someone help me with this?
Thanks,
Joanna