Email reminder problemsEmail reminders are sent by Google Calendar, not by CalenGoo. If you don’t get email reminders for your events, first ensure that there are really email reminders set for your events in Google Calendar. Sign in to Google Calendar, open an event and check if it has an email reminder:
If there is a email reminder configured but you didn’t get an email, please check your spam folder, maybe the reminders were filtered.
If that didn’t help, please check if it works when creating a new event with an email reminder directly on the Google Calendar website.
If you can’t get the email reminders working at all, you can use "pop-up" reminders instead, because "pop-up" reminders are handled and displayed by CalenGoo so they should work even if your other Google Calendar reminders do not work. Please see here: Reminders