To resubscribe just enter same email but add “+1” to your name

sudo certbot register --update-registration --email you+1@youremail.com

certbot update_account --email you@youremail.com

certbot installation

• https://www.chanhvuong.com/3221/re-subscribe-to-lets-encrypt-renewal-reminder-emails/
• https://letsencrypt.org/docs/expiration-emails/