Hello. Every day constantly alerts the calendar. Reminders can not be dismissed. See. video. I have the latest update - Czech version. Video: [
https://youtu.be/e\_VLUAbUlWw](https://youtu.be/e_VLUAbUlWw "Link: https://youtu.be/e\_VLUAbUlWw")still not working 
Did you try and repair the calendar? Right-click on the calendar and choose Properties > Repair.
Also, did you try and delete this event?
I had the same problem: reminders appeared constantly and could not be deleted.
“Repair” fixed the problem.