iirc there’s instructions on completing the anubis challenge manually

everytime you copy paste a terminal command, try see if you can understand what it’s doing with:

$ tldr mycommand (you need tealdeer installed)

and

$ mycommand --help

imo this is way more concise and beginner friendly than reading man pages

make sure ports 80 (htttp) or 443 (https) are unblocked on your server