Unfortunately, their website crashed yesterday, on Day 1. It is now Day 2 and although they have made progress, there is still a lot of work to be done to resolve the issue(s). I'm sure you're hearing about this website crash from all the news media outlets, social media websites, etc., and I'm sure some are postulating as to why this happened. Regardless of the "how and why," there is one thing everyone needs to remember--these "glitches" will be worked through eventually.
Please be patient; you have six months to enroll in a plan. Consider visiting the Marketplace website in a few weeks or contacting a Licensed Insurance Advisor regarding any options through the Private Health Insurance Exchanges/Marketplaces available in your area.