This application is commercial which means that you will have to buy it in order to download and install it, that's why you have a password that denies the installation after the setup package has been downloaded from third party websites.
You can consult the pricing info by following this link to see exactly what I am talking about. I believe that after you've successfully made the payment, the developer will issue the archive and the password along with the license to properly install and activate [QFT Control Toolbox]2].
