Very easy to register, very difficult to leave! Don't go there! Just, don't! I couldn't even use the software to download the files I wanted. So I wanted to leave immediatly after registration.
They have your credit card number at that point, and to leave, you need to click several times on a small "continue" button which does not obviously lead you to the cancellation page your are looking for! In the end, after several "continue" clicks, they ask you to call them by phone (!)... at certain opening times... Last and not least, you need to type your Personal ID in the phone! And this ID is DIFFERENT from your username! X_x