Hi da64u,
First off I would like to clarify something, when you say you have used the restore tool 3 times to "create the USB". Are you trying to restore the Multipurpose USB Device that came with the kit, or are you trying to create a new one using a third party USB thumb drive?
The reason I ask is because the restore tool is designed for the Multipurpose USB Device, and even if it was able to restore the files to a 3rd party key it would still be unable to unlock the software for use.
If you are attempting to use the USB Device that came with your kit, and your system isn't seeing it for activation then we may have to replace it. If you need a replacement please send me a PM with your email and order information and I will get the ball rolling on an RMA.
Please let me know if you have any additional questions or issues.
Thanks,
Kris