calendar alerts

My calendar is no longer notifying me 10 minutes before an event. It used to pop up on the screen and now it doesn’t. I’ve gone to notifications and it is still turned on. What else might I be missing?

iPad Air with WiFi and Cellular Updates iOS Issue: Calendar Alerts issue since updating This is kind of confusing to explain. When you create an event for the calendar and try to set an alert it gives you get your default that you set for the first alert. Now, the first alert is set for the...