I made an account and was able to login last night to the website. It only let me login to the game once. I tried again this morning 5 times and still cannot login to the game. I am logged in to the website just fine. The error in the game client I am getting is "A server error caused authentication to fail"
I have tried both the "web" client as well as the "installable" client.
I tried to send an email to customer support through the support link. It gave me "An Internal Error has occured"
Buggy buggy buggy, hope the game is better than this, to bad right now I am unable to play.
The first thing I would try is to do a clean reinstallation of the game. Go in your control panel and uninstall SK, and then go into your Appdata folder and manually remove all the files left behind. Restart your computer. Start the web client and let it install. See if that works.