Im afraid no-one was to expect the influx of signups. However, we are sorry to hear that.
blunt: It will be published on our front page before the end of the week.
I'm sorry but to me this is completely wrong. The email did not state any other condition besides signup until 16 Feb 2012.
If you stated that there is a limit of 200 accounts I would have accepted it but since it did not state that I feel you should provide the service to anyone signing up by end of today as specified in your email.
To me this is false/misleading advertising.