Not a big deal, but as usual its made out to be.
Problem with Let Encrypt / Certbot, the auto feature doesnt work for me. On my own server, it destroys the certs already installed and messes up the apdate.
Meanwhile your left with a dead site, no broswer will connect to (as HTTPS is forced). I have to manually do it by hand, which can be a pain. So I wrote a script to automate it, will see if it works. If it does, then I will cronjob it.
Maybe can use it here.