Revoking certificates – Let’s Encrypt – Free SSL/TLS Certificates https://letsencrypt.org/docs/revoking/
Correct Way to Delete a Certbot SSL Certificate | by Matt Hagemann | Medium https://medium.com/@mhagemann/correct-way-to-delete-a-certbot-ssl-certificate-e8ee123e6e01
Renew_before_expiry commented out – Help – Let’s Encrypt Community Support https://community.letsencrypt.org/t/renew-before-expiry-commented-out/25791
Different certificate for subdomain – Server – Let’s Encrypt Community Support https://community.letsencrypt.org/t/different-certificate-for-subdomain/60404/7
ACME v2 Production Environment & Wildcards – API Announcements – Let’s Encrypt Community Support https://community.letsencrypt.org/t/acme-v2-production-environment-wildcards/55578