I found the form suspect as well, but someone from USFS emailed within a few hours with the FOFS code so I could buy my tickets early. And yesterday I got a package from them which included a 2021 skating calendar cheer2 and some butt-ugly coasters confused.
no link on the website yet. No email! I did make payment last night at 6pm PST, so if it's not an automated process (which I'd expect, but maybe I shouldn't) but someone manual, I suppose they will email me sometime today.
edit: got my tickets, ran into the same issue 'can't select single tickets' even when they're already single. A bug I suspect. I picked something else. Looking forward to it!