Wordpress site issue
I am a web developer and recently we built a website using wordpress. Specifically in this page https://jaotc.eu/jatc-participants/jatc-participants-jatc2/ there is an issue with the participants not showing/loading. I exclusively use Firefox for development and had no issues so far but this problem only exists in Firefox. I tried edge and chrome and the page works fine.
Maybe it has to do with some kind of compatibility with the wordpress theme or wordpress itself. If you would like to check it out and see if there is a general fix that has to be applied.
Thank you in advance!