IPN history is now showing my ARB notifications are coming in. However, all notifications are throwing an error "IPN notification invalid hash / Fraud attempt". Because of this the system is still expiring the subscription even though the notifications raw data says "'x_response_reason_text' => 'This transaction has been approved.',". My mdf hash has been set to a new one but this problem still persist. Is there a specific character count the hash needs to be? Doesn't make much sense.