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-allPauline Seddon commented
I've found that most reminders trigger correctly. However I'm not getting them on repeat events where the repeat is yearly. This is the paid version.