gravatar image not displaying

Hi there

We are having a problem in trying to pull the gravatar image. We’ve successfully created a gravatar profile and associated an image to it.

Unfortunately for some reason it’s not appearing. Can you please advise.
Here is a link to the post we are busy testing:
http://www.bpesawesterncape.co.za/south-africa-a-bpo-destination-of-choice/

http://ww.wp.xz.cn/extend/plugins/about-the-author-advanced/