Probelm Activation Draftisight

Hi,

 I have a problem with draftsight. When I open the program and I enter the data, i click on activate and nothing happens. Even after sending my details with mail id am not getting confirmation email. So I can't open draftsight. What can I do to fix this problem? I renamed the SWActivation from the registry key and ran again the registration process. But nothing happens. I uninstalled it and install it again but it didn't fix. Can you please help me to solve the problem?

Thank you for your cooperation

Giuseppe Masso