Weird. You can definitely skip it if you want to! Or if you want to run the mystery mod in minecraft, press the " Run from_builder .... etc" to mod chest, after you've gotten an ip by pressing the start server button on your server page and entered your learntomod minecraft world on your minecraft launcher. (note: the ips last for about 10-15 minutes so after 15 minutes, press start server again to get a new ip.) The Run Your Frist Mod badge covers how to connect to our minecraft server. If you're having trouble, let me know.
And if you ever get stuck on a missing or scramble badge, you can always go to mod.learntomod.com/programs to look up the correct answer, after pressing one of the 'run from ... buttons. Then type the badge id number into the search by keyword field. The badge id number in this case is 2832 -- it's the first set of numbers in the badge url.
Do you use windows 10? Or I wonder if your firewall or an adblocker or plugin on your browser is interfering somehow.