I've been working through issues since MC released their new update. I've been able to create new instances and copy over my worlds and get them running.
That being said, I had to recreate all of my schedules. The primary ones send me an email when someone joins or leaves the server. I have configured SMTP settings correctly and receive the test message as expected. However, when i set a simple schedule (identical to what i used to use), it never sends the email.