It's possible you were experiencing the DNS server issue many websites, including ours, were experiencing today. It caused intermittent issues accessing and/or navigating the site. When I accessed your account I was able to download an e-mail with no problems. I would try again to see if it works.
If it still doesn't work please reply here or reach out to us at social_support(at)constantcontact(dot)com with your username, the error message you're getting (if any), and a reference to this post. We will be happy to look into it further.
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