Hmm ludum dare has its own place to discuss things like this, but okay.
LD site has wordpress as backend. Sometimes in 5 years my experience in wordpress, it never happens. On your case, you're already registered but the mail bot is deactive so it couldn't reset your password. How long have you been experience this?
I didn't see a forum over at LD, but if it did I'd still be in this chicken and egg problem where I can't log in until I register and can't register until it can send me the email confirmation. The problem has been happening for a couple of months. I've never been able to log in.
I've checked my spam filter box and there's nothing from LD there. However, several emails seem to think that I need herbal V1agrA. I wonder what they've heard?
[Later that day]
I started browsing the support forum at wordpress. It looks like LD will have to make some changes to their setup.