So I am following the instructions on this page and using the command
sudo certbot --authenticator webroot --installer nginx to get my certificate.
I couldn’t figure out my webroot so I kept trying different folder names, getting an error each time. Then I got
There were too many requests of a given type :: Error creating new authz :: too many failed authorizations recently: see https://letsencrypt.org/docs/rate-limits/
Apparently I need to wait a week before the rate limit is reset. None of the certificates I attempted were actually used (I got an error each time). Am I out of luck?