Well that's interesting because when I do either:
certbot renew
or
certbot certificates
After it lists certificates, give me pathes, dates, tells me it's not old enough to be renewed etc, I also get the following note:
OCSP check failed for /etc/letsencrypt/live/fellsbiker.com/cert.pem (are we offline?)
What do you suppose that is all about? It seems to still be functioning just fine.