You had to actually press a button(on the home page) to apply for 2nd beta ,it was sortof an open beta. If you didn’t do it, then it means you missed it, you weren’t checking too often.
The info about this beta I found on the forums even 2 months prior to the registration process, I personally can’t understand how you could “miss” it , if it was all there in plain sight for everyone to see.
I just can’t help to think that you only woke up yesterday and started caring just now.
However I might be very wrong.
Please for your own good stalk the forums and fan-sites , not many ppl will put the effort to actually do something about it. If you really care, I am 100% sure you can get a key that way. You just need to put in the time.