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-allAnonymous commented
I agree - this has been a great application for years, but now it behaves erratically. My issue might be different than others. I have a Motorola Moto G4. It was working well on Android 6, but after upgrading to Android 7, it stopped working. Now, about half of my reminders do not fire at all.