I setup cron-job.org to hit wp-cron.php every 15 minutes. It appeared to be working fine, but then announcements got stuck again and I had to toggle the sending interval to get them to start sending out again. For a couple months I was manually going in every month and just toggling the sending interval to ensure it would continue to not get stuck. However, after 3 weeks (just shy of when I would go in again and proactively toggle it), it got stuck again.
1. I confirmed cron-job.org was running fine and it was.
2. I manually loaded /wp-cron.php as well to test.
3. I confirmed that “fep_email_interval_event” is not listed in Cron Events (via the WP Crontrol plugin).
4. I toggled the sending interval from 5 minutes to 15 minutes, saved, toggled it back to 5 minutes and saved.
5. Announcements starting sending again.
6. “fep_email_interval_event” cron event kicked off again on schedule and more announcements sent out (I have it set to send 50 messages at a time).
What else can be done to avoid this from happening? The fact that “fep_email_interval_event” is disappearing is the cause and why announcements are not sending.