Reminders Won't Dismiss

Recently (Within the last week or two), eM Client won’t let me dismiss Calendar Reminders.

The Reminders popup, and I select Dismiss All, and the Reminder goes away. And then it almost immediately pops up again with the same Reminders. This happens over and over.

If I Close the Reminder window, it stays closed. The other thing is that the Reminders are all old (Prior to the current date). I have the settings configured to ignore out of date Reminders but they keep popping up anyway.

I am running version 9.2.2157

I would appreciate any suggestions.
Thanks!