It’s not just DVC. Making fast passes at 60 days in my experience is a nightmare. The website crashes and can’t make a fast pass for at least 25 minutes. It seems Disney did not build a system big enough to handle the traffic it gets.
Last night, tried to book the next vacation.
When I went off the link on the front page, got the dwarves. Tried several times, same result.
When I went to my dashboard and used that link, went through without a problem.