License expired

Dear senior,

I've download the try run VP-UML professional verion from web site.

And, I received the license key file attached in the E-mail.
After I import the license key, it seems importing successfully.
But the status shows that the license key expired… :frowning:

I've uninstall the VP-UML, and reinstall again, but it didn't make any different.

I don’t know what’s going on?
Is there any body have the same situation before?
What can I do for this case?
The O.S. is Windows XP professional, Service Pack 1, P4 1.8GHz, 640 MB memory…

Kiwi #