I used certbot to install SSL on my Ubuntu 14 server running Nginx & PHP about 2 yrs ago and I recently got an email (refer to excerpt below) that mentioned I have to update my software to use ACME v2 protocol. How do I do this using certbot? do I have to update certbot software first?
According to our records, the software client you’re using to get Let’s
Encrypt TLS/SSL certificates issued or renewed at least one HTTPS certificate
in the past two weeks using the ACMEv1 protocol. Here are the details of one
recent ACMEv1 request from each of your account(s)