iPhone 6s calendar alert issue Why does my calendar no longer hold two different time alert? What I put in my second alert will change my first alert to match what I put for my second alert.
It appears that the second alert must occur before the first alert does, otherwise iOS will set the second alert to match the first alert. So, make sure your first alert ("Alert") is set to the time closest to the event, and the second alert is set to whatever time you want that is before the first alert.