It looks like you have a trial pirated version of the software. If it came from China it most likely is a pirated version.
Probably.. I don't know where the software came from.. How can I resolve my problem ?
You might want to find a different forum for you question. This is the Linuxcnc forum.
Dear Stéphane,
Enclosed is demo ncstudio V8, please take a look.
https://www.dropbox.com/s/mzrou1mmqh...6A_std_ex7.exe
Best Regards