Certbot not generating keys in live folder

serverco, I used https://gethttpsforfree.com/ for the production name before I knew there was something better. as far as the actual subdomain, I’m going to generate a new one and see if I can’t secure that.

for whatever reason, heroku was giving me an error from the certs generated from https://gethttpsforfree.com/, saying that they required a passphrase, and I couldn’t get around that.

I do have an existing key, where can I get one of those existing certificates?