Noting surprising, the parameter div_id isn't load... 
Open mod_friendconnect_15.php, and add below the line  
$website_id = $params->get('website_id');  
this one: 
$div_id = $params->get('div_id');  
save it, and enjoy!  
See it in action here: 
http://www.joomla-tips.org and here http://gyergyoremete.info