Calender reminder/notification keeps popping up events from the past

Using 10.1.4588.0 - Win10 Pro -Yahoo Account.

Suddenly I keep geeting these event notifications even if this event is already done. Some of these notifications are more 8 months old.

How can I make sure that is exactley this one notification?

Marty

I just purchased eM Client, and I’m starting to think maybe I shouldn’t have. I have a reminder for an appointment in about 2 hours, I click on the popup to snooze 30 minutes yet it pops up every 5 minutes. Very irritating!

Running eM Client 10.1.4588
Using outlook.com email accounts.

Guess I will be calling in technical support to make the best of my year support.