Due to an influx of spam, we have had to temporarily disable account registrations. Please write an email to email@example.com, with your desired username, if you want to get access. Sorry for the inconvenience.
certbot by default sleep 1-480 seconds before renewing, to avoid all people renewing at :00. In our case the logic is is unnecessary as systemd is handling it (RandomizedDelaySec=24h).