Do you have any idea how to refresh the cash of metadata (OpenGraph?) fetched from URLs ? We changed the banner photo on https://elifinquartet.pallamondo.net but our introduction post still shows the old picture: https://musicworld.social/@elifinquartet/114919068220749364
I've tried editing the post to remove the URL, save, then re-add the URL but the old picture is still there 
Mentioning @ruud you in case it can only be done by the instance administrator.