I think it might have something to do with incompatibility with my theme (PopularFX) – the moment I make any minor edit to a page containing the shortcode, the individual profiles no longer show (I just edited the “View All Listings” page, for example)
No, my translation plugin does not create new pages.
In any event, I disabled the plugin temporarily so that you can see the site without the plugin.
Polish is category 16, so I tried inserting the shortcode again [connections category=16] – but same result.
If it makes a difference, the only change I did to those pages (aside from English – which still works fine) was I changed the background colour on the bottom of the page (made it grey).
After that, the category directory loaded fine, but individual profiles areas were blank when clicked on.
Thank you.