Not sure, I think I've only used the version they distribute on pip. Which can be a bit obnoxious if you have to build the python cryptography package for your target os/platform but if you don't it's a fairly minor install.

There are quite a few other options besides certbot, I was just suggesting it as a "install + one liner" for adding auto renewing ssl certs to a server.

https://letsencrypt.org/docs/client-options/

You don't need snap. Follow the Pip instructions: https://certbot.eff.org/instructions?ws=nginx&os=pip

Or docker: https://eff-certbot.readthedocs.io/en/stable/install.html#ru...

Ubuntu on a server? Just use Debian lol.