New Managed HTTPS domains may fail to activate
Incident Report for Aptible
Resolved
Let's Encrypt is report they're back up.
Posted May 19, 2017 - 10:31 EDT
Identified
Let's Encrypt is having difficulties; issuance of new Managed HTTPS certificates may be delayed: https://letsencrypt.status.io/

Existing Managed HTTPS Endpoints are not affected.
Posted May 19, 2017 - 08:51 EDT