Subscription buttons using Google Blogger.com page
I can get the 3 subscription buttons to appear on a page on my Google Blogger.com site, however when I click any of the 3 buttons, the popup window appears, shows a spinner, and then closes without letting the user sign up for the subscription.
I've checked that popup blockers are off. (and the popup window appears, shows a spinner, and then closes).
Is this possible to do with Blogger? If so, how can I get this to work?