I'm getting the exact same issue.  This stinks so badly.  They saying on their twitter that you need to use a different internet address to log on to your account:

________________________________________
We are now online with a new temporary URL!

Nothing has changed other than the URL.
We will be using this until the DNS issues are resolved.

http://coinexchange2.com

Thank you for your patience and support!
________________________________________
https://twitter.com/coinexchangeio?lang=en-gb



I'm removing all my altcoins off Coinexchange as soon as this issue is resolved.  If their IT system is that flawed and poorly managed it's no place to leave assets that are collectively valued in the millions of dollars.  It's frightening to realize all your money is in the hands of incompetent people

Sorry if this appears paranoid, but this could even be a phishing scam.  We're being asked to type our coinexchange.io passwords into a website that isn't coinexchange.io.