PDFCreator version 1.0.1 asks for license key

I had the version 0.9.8 previously without problem. I recently installed the newest version 1.0.1. When attempting to create a PDF from Web page, for example, a message appears saying the trial period is over and asks for a license key. If I click OK, the page cannot be converted in PDF, the action is terminated, but I do not have any license key. Can someone provide help, please?

Thanks a lot.

Trong