First insert the link to the Web Server in your license template in the TAG WebServiceURL with the string /lpws.asmx added.
<WebServiceURL>http://www.registerserver.net/hostingID/lpweb/lpws.asmx</WebServiceURL>
Example
<WebServiceURL>http://www.registerserver.net/7843289/lpweb/lpws.asmx</WebServiceURL>
Load the template in the Licence Generator and create a new license file. The link is stored in the license file.