Thanks for your post and sorry you're running into this. We'd really need to double check the SQL Monitor Base Monitor log files for around the time that this was happening, so are you able to send those across to email@example.com
with a subject line in your e-mail of F0057343? You can find where they are by going to Configuration > About and you'll get the file path they reside in on the machine hosting the Base Monitor service.
It would also be good if you could provide some additional information, such as if the machines you are monitoring are VM's or not.