It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

is there a possibility to change the Keyboard configuration? I am left handed so it would be easier for me not to use wasd but other buttons.

This question / problem has been solved by NebuchadnezzarIIimage
There is a control layout in the options.