I set quiet time for the night and everything works fine. I don’t really know the reason. I still have pop3 accounts and receive all notifications every 15 minutes. Thanks for the answer.
Just wanted to say I was having this problem. Couldn’t figure it out.
I probably read this page more than a couple times.
Then I saw this screenshot and it clicked.
The “alarms and reminders” is really misleading. If I understand correctly this is more about background sync and if this is off “push” won’t work.
Anyway, appreciative of the dialogue and screenshots here.