I have been having the same issue for a few years. I have a backup scheduled each evening and I get an email telling me not to worry, I am protected. Then every 2 or 3 weeks Data Protect just stops working. No warning and no email. I checked today and was unable to access Data Protect. So I have to restart the server and when I do I get an email asking if I forgot to backup. I see the last backup was 5/26/22. It just goes away? Very frustrating.