Have you a url to see? Those buttons if I follow here about the reviews are coded as such and tells me your vbulletin url in forum settings is wrong. Not the integration url but the main forum url in forum settings in admin
function get_profilelink( $tuserid, $tusername="" ) {
global $Globals, $db_link, $postreply, $privatelink;
$profilelink = "{$Globals['vbulletin']}/member.php?u=$tuserid";
$privatelink = "{$Globals['vbulletin']}/private.php?do=newpm&u=$tuserid";
$postreply = "<img src=\"{$Globals['idir']}/reply.gif\" border=\"0\" alt=\"Post A Reply\" />";
return( $profilelink );
}