Whether it was hacked or the site was a scam to begin with, your login is in the hands of someone untrustworthy. Make sure it is different from everywhere else.
The site seemed bait as hell to begin with, and the fact that the passwords were in plaintext....
Nothing big happened. Stayed up real late to launch the zeit pool but there were a couple pools that were up before source was released so everyone that was lined up to mine with us jumped ship in the first 15 minutes. It was a total fail so I went to bed. Those big launches are pure chaos. We had a large number of pre-registrations and some of them had some huge hashing power but there is just no way to compete with an official pool that is ready before launch and starts out with over 5 GH. I always say I wont get in on coins where the devs have the their own pool but I did it with Maxcoin and again with zeit. Never again...for real this time.
Seriously, I've felt your pain before. Would be even worse trying to host a pool! There was a few coins I wanted to get in on the launch but it always fucks up somehow. So frustrating. I remember posting on the launch thread "WHAT THE FUCK THIS SHIT IS FUCKED HELP ME!!" hahahah. Definitely the best way to get a hand