Is it possible that you (and Arayla's fellow) is loading beta in html5 version?
You should be able to see the html5 icon in the loading screen.
Sometimes it can happen that he html5 version takes (very) long to load, just hang on a little longer should do it.
Actually it was going on for hours - no connection and yes, I do have html5 active. I finally got in though. I logged completely out, refreshed, cleared cache and that let me in. So thanks to everyone, but I found a way!