We are aware of customers experience random errors with Let's Encrypt provisioning. This appears to be an issue with their systems although nothing has been posted to their status page, maybe because it's still early morning in the US. We are continuing to monitor the situation.
https://community.letsencrypt.org/t/acme-404-errors-for-existing-end-to-end-tests-no-such-authorization-certificate-not-found
Looks like it is back up as I just managed to obtain a new SSL 👍👍
