many people are unfortunately in the same boat as you. it's incredibly frustrating but the government is having difficulty with the exchanges and it's keeping many people from completing their application process. the good news is that you have until december 15th to buy coverage that starts at the first of the year (no plans can start before 1/1/14 anyhow). i would suggest you sit tight for a week or so to give the government time to work out the kinks and then try again.
i tried signing on to the health insurance marketplace site since it opened and cannot get on. what should i do?