Problems with getting Certbot setup to work

Oh God, my bad - Here are the results for nmap -p 443 eekhof.org:

Starting Nmap 7.92 ( https://nmap.org ) at 2022-09-16 15:26 CEST
Nmap scan report for eekhof.org (92.194.255.158)
Host is up (0.081s latency).
rDNS record for 92.194.255.158: port-92-194-255-158.dynamic.as20676.net

PORT    STATE    SERVICE
443/tcp filtered https

Nmap done: 1 IP address (1 host up) scanned in 0.93 seconds