Correct serial Number to use with CT PRO Beta 6

I try to put my CT 2.12 win version serial number in CT PRO beta 6 instalation window, and doesn’t work!
What I missing?

Without a serial number for Colorthink Pro (which is a separate product) you can’t run the Beta. The original release of Colorthink Pro, 3.0, will run in Demonstration Mode with limited functionality. However, the beta won’t run in Demo mode.


Many thank’s for the light!