Linux/Firefox 65.0.1 (64-Bit) here, chat also not running. Shows 0 active members all the time (empty window)
Same on Linux/Opera 57.0.3098.76
Even when calling the script
fantasyfeeder.com/chat/text/FFChat2directly, it gives a hardcoded (!!) 0 as users. Inside plain HTML. So it looks a little bit as if the server-side script has some trouble with languages? countries? or something like this that only affects certain users.
Or there is a blacklist for guys like me who talk nonsense all day