Pay to blog demo period not working, or I don't get how

Installed this plugin for the first time today and configured it for a "Demo Period" of 5 days. I assume this should mean that new admins have 5 days "before users have to pay to use their blog."

But when I made the first test blog I was immediately sent to PayPal and had to pay. That part worked great and I received the proper e-mails indicating that a payment was processed and now I have access to the blog.

How do I make the "Demo Period" really work?

(Wordpress-my 2.7.1)