The application should be working a lot better on new versions of the app (3.1.0+). If you are receiving no reminders at all, please refer to our troubleshooting guide: https://calendarsnooze.uservoice.com/knowledgebase/articles/1838176-no-reminders-at-allTim commented
In addition to missing some events altogether (including some repeating notifications that it has successfully notified me of in the past), it has a bad habit of sometimes firing the notifications off late. Just now received a notification 9 minutes late. Phone had been sitting on my desk, so it wasn't an accidental "pocket snooze". Sometimes the remainder comes an hour or more after the event has passed. It is an unreliable app at this point.Tim supported this idea ·Tim commented
I use the voice feature. In addition to missing some notifications, I've also had some notifications pop up at random degrees of lateness (10-40 minutes or so). For example it might notify me with "Upcoming event ... occurred 40 minutes ago."