Hi,
I’ve just followed the instructions on this thread (https://community.letsencrypt.org/t/how-to-resolve-tls-sni-deprecation/83166), as I’m in the same boat as dbnawrocki.
After updating my Ubuntu box I ran "sudo certbot renew --dry-run and got a “Congratulations, all renewals succeeded”. It looked to be using http-01 challenge?
Does this mean the situation is now resolved?
Thanks
Darren.