Ok I took a look and reinstall the module and was confused but then realized you just need to add the www to the URL in order for it to work. If you need to force www you can add the following to the top of the template index.php file.
Add right under the <?php
$url = $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
if ( "www." != substr( $_SERVER[ 'HTTP_HOST' ] , 0 , 4) ) {
$url = "http://www.".$_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
header('Location:'.$url);
}