Notification message sent: ***UNCHECKED*** Zextras Backup Notification, Smart Scan started. From server xxx.xxx.com

This is the first message I've got like this ever with Zextras.  It was reported over the weekend, and all notifications sent since are back to "normal".   What is the UNCHECKED indicating?  The message was sent twice, once when Smart Scan started, and the next one, when it completed.