Hi Thomas,
in theory, you don't need a license file, therefore no diskid, only an activation key provided by our licensing channel.
please look at the documentation on licensing here : https://www.cm-labs.com/vortexstudiodocumentation/Vortex_User_Documentation/Default.htm#Licensing/licensing-activating.html
if your license key is already fulfilled, you'll have to contact our representative through the same channel from which you got the first key.
Regards,
Marc.
Thomas Horsch