Zoom events/sessions/Event hub

I'm testing Events/hub with a full meeting single session. THe default email event reminder notification (one week, one day, one hour) is set up. My attendees are not receiving the one day before notification, but are getting the 1 hour before notification. The one week before in this case is not relevant. 

I did a test, making it 24 hours and 48 hours before, and it just missed the 48 hour target notification. 

What is going on? The notifications are pretty important. I have multiple testers, including myself, and the experience is across the board. Thanks!