Which file would you need me to send, and to where?
When you said you need to see the validation script, I looked at the WAVT_Scripts_PHP.php file, and here are lines 47 and 48...do they have anything to do with it?
$schema = $_SERVER['SERVER_PORT'] == '443' ? 'https' : 'http';
$host = strlen($_SERVER['HTTP_HOST'])?$_SERVER['HTTP_HOST']:$_SERVER['SERVER_NAME'];