The title of this thread has been edited from the original: 30 invoice reminders within the same 2 hours?

I have many many recurring invoices set up but this morning one of my clients, who is a modest 14 days late, received something like 30 payment reminders within 2 hours.  I am set up for a reminder on the day the invoice is due, a 7 day late notice, a 14 day late notice, a 21 day late notice and a 30 day late notice.  Why would Square be sending 30 reminders in a 2 hour period on this one invoice?