If you just purchase GcPro-Key then you have Register & Active your dongle 1st after that you can use your dongle.

so here are some steps

1- Go to Support Area
Its same link where you get all your Latest Update,Drivers,certs,qcn etc.

Downloads:

link1= https://www.mediafire.com/folder/kzd5v0z4fecn7/GCPROKEY
link2= https://mega.co.nz/#F!1pxHgTBA!P7owR-MlJxD-r0_N6o0xWQ
link3= https://drive.google.com/folderview?...FE&usp=sharing
link4= GCPROTEAM bởi gc P. - 4shared
link5= https://www.dropbox.com/sh/w9gdsem09...Upj32aEVa?dl=0
link6= https://www.androidfilehost.com/?w=files&flid=120669

2- Download Latest GCPROKEYupdateXX & CARD Driver & FTDI BOX DRIVER.
3- Extract to folder not HERE or open from rar GCPROKEYupdateXX.rar, Go to GCPROupdatexx\UPDATETOOL\UPDTOOLOK ,Run GCPROUPDTOOLOK
4- Install CARD Drivers if needed, Plug Dongle for Registration & Activation ( Make Sure ONLY GcPro-Key Pluged ) Select Register GCPROKEY in GCPROUPDTOOLOK
5- Watch the Video in case if you feel hard.