Can you help me null this wordpress plugin?

I don’t know this plugin but have you simply tried changing the following?

if ($results) {
if (empty($results) || $results == “UNREGISTERED” || $results == “UNKNOWN” || $results == “CANCELLED” || $results == “FAILED” || $results == “BLOCKED”) {
$validLicense = false;

to

if ($results) {
if (empty($results) || $results == “UNREGISTERED” || $results == “UNKNOWN” || $results == “CANCELLED” || $results == “FAILED” || $results == “BLOCKED”) {
$validLicense = true;