Hey Elise, it was a nightmare to get this back on running and I thought it had to do something with caching. Well, after I was about to do a clean install and migration I switched from Child theme to a Regular / Full one. And pictures came back!

And now I can’t switch back to child since pictures will be gone once away.
What would you advice on doing from this point?

I’ve attached functions.php from the child theme, perhaps it will help.