This is not a problem because I've already know how to fix it by simply reinstall it.
But I want to report that when I switched from BOOTCAMP mode (Boot Windows directly on my MAC) , to VM mode (run bootcamp partition inside MAC OS on VMWARE) it reported "License not valid".
After that I can fix it by reinstalling.
I just want to inform you that I may reinstall UniGui often because my MAC sometimes it error and can't boot into Windows directly so I have to run it as VM.
Please don't detect me as license abuser.