By default, it does not. Your KW website address, or URL, will be formatted as xxxx.kw.com. If you add WWW to the beginning of this URL, it will not actually route to your website. Ensure that you are sharing or posting this site without the WWWs.
If you buy a custom domain (www.paul.com), and forward this domain to your Command Agent Site, you would then be able to use the WWWs, as it is a part of the custom domain you bought.