After getting bounced around the phone system for a few minutes, I finally got an agent from the Electronic Services desk who dug into the problem. I got to listen to many loops of "Does checking in online 24 hours in advance sound convenient? It is!" as she put me on hold again and again, but I stayed friendly and appreciative and she saw the problem through.

We now have the ticket properly issued at $854 in V class as promised on the website.

Moral of the story (as others have said): be persistent, and be nice, and good things will happen.