Staging Env Down?

[_az]

For what it's worth, I can create new orders. But note this comment from the other thread:

@cpu

accounts that created buggy orders during the outage period will continue to see some 500’s if they submit new order requests for matching names with the same ACME account. I recommend rotating the staging ACME account or waiting 7d for the pending orders to expire

You could try:

certbot unregister --staging

and seeing whether a new ACME account suffers from the same issue.