I'm s sorry to hear you are not receiving these tests! Is this happening when you send a test email to a different email address? I have taken a look at your most recent email campaign and was unable to replicate this same experience. With that said, in some cases emails can not be delivered due to email content or subject line. Sending a blank email with a simple subject line is a quick way to see if the email is being blocked due to content. Are you able to receive a blank test?