Hello,
I have installed latest free version of freichat in one of my website www.sonicommunity.co.in
My problem is that i have changed hardcode.php and mentioned the table name, username and id as per my database

When i m login to the website it is showing me the chat module but instead of displaying username from the table it is showing Guest-mdi something like that. Also note that in php code i set $ses variable with my session id.

Please help me out.

Enable php debug in freichat backend and then check the file freichat/freixlog.log for any errors .