Hardware: Mb Star C3 China clone
Software: Xentry Diagnostic
Save Not Successfully
licSaveLicense XENTRY Diagnostics
13 – Store operation tried to save a StartKey which is older than existing StartKey with the same application ID.
Possibility of using fake old StartKey with higher permissions.
First delete lic-key2.dat in the local disk C:
Second change the Date and Time of your PC (should be same as the real)
The last but important, check if your activation is correct or not