REad More Not working

Hi there. I’m using a site built with Elementor. When I add the shortcode and preview, it works. But it doesn’t actually work on the live site. I am baffled as to why. I did add some css to style it and maybe that was the problem. But if you look at my site and you go to any post you may see it doesn’t show at the top on some and does on others, despite me using the same template for all of them. Any help would be much appreciated.

Also, is there a way to get the shortcode to say “4 min read time” or whatever the time is? Thanks!

The page I need help with: [log in to see the link]