Hi, @sms. Yes, I’m seeing the domain working with and without the www and the SSL certificate includes both as well.
It does appear the SSL certificate was updated on Mar 19 at 9:56 PM PST/PDT. Based on that I would guess that whatever the underlying issue was, it was resolved around that time.
The DNS record caching is my best guess as to the root cause:
This caching is controlled by the time to live (TTL) value in the previous DNS record, not the new DNS record. It is hard say now why it took so long to update. The previous record would have the answer to that but it isn’t active now.
If there are other questions about this, please let us know.