You can access the online form on the Apply for licenses online [Request licenses online] Tabbed page.
You can register and order licenses using the online form.
When requesting licenses for the license server, pay attention to use mac addresses, not system IDs.
You can find the mac addresses either on the Licenses tab page under Hostid [Host ID]
Save the configuration in the form of a json file. Open the file in Notepad. The first entry under "hostids" shows the Mac address of the server. You can determine this remotely in this way. It is required for issuing the license.