The fastest way to contact someone on the admin team is to send them a message on mono. Just login and look for a user with a * by their name on the Users On screen ([ESC][U]). Those users should be able to assist you with any problem you have. If no-one is around, send a message to help: [ESC][S]help[RET]. This will be picked up and responded to quickly.
If you don't have an account and want to ask a question, or there is a problem with your account, send an email to monoadm@mono.org.