How to connect to the server on the chatroom on your website?

I just got a chat room on my website but when I tried to test it out and sent a message, it said “SERVER NOT CONNECTED.” The way I hooked it up was I pasted the code to it on the HTML bar…It’s one of those Java Scripts from chatfiles.com. Please help me. Also if you know of any other websites where I can get a free chat box for my website that comes connected, please share those with me.