It is not a matter of updating to the pro version. I don't see it working on opera as well.
Your minification is creating problems. Just look in the javascript console in your browser. On firefox I get window.addEvent is not a function.
This comes from this line (nothing to do with our component):
window.addEvent("domready",function(){keepAlive.periodical(840000);});
You are minifying too much. When using JCH one has to play around to find the perfect minifying option for his site. There is no solution that works on every site. The issue is with JCH and you'll have to try that, than try something else till you get it to a place that it minifies only the parts necessary. If you want I can have a look at your backend and jch config (but I'll be happy if you get a subscription then
)