Emails are not being sent- it was working for a while and then stopped – perhaps there is an issue of if 1 person rsvps to multiple events it only sends the first few events
also perhaps by setting reminders to the minute- with wordpress cron – if the site is not being used at that minute then it doesn’t send- I don’t know

to be honest I think the reminders should be based on days or hours – and set so that if it uses wp-cron that the time set is for example to 1 day then the trigger should be 2 hours before and after the desired time- this ensures that people don’t have to be on the site at the exact time of the set send