Seems like a great app but – Essentialist - Checklist, To-do List and Reminder for work, home and school essentials Review

I haven't been able to figure out how the reminders work. I set the reminder for a date and time, but when the set date and time arrives, nothing happens. What am I missing? Any help is appreciated.
Review by Chanklacat on Essentialist - Checklist, To-do List and Reminder for work, home and school essentials.