I imported a Blogger blog yesterday and since that doing that, the author link is not displaying in the header meta. If I look at the source code it looks like the code is there, but I don’t know exactly where the problem is.
Sorry but we cannot help you here at all. That’s not a free hosted WordPress.COM blog and you are posting to the wrong support forums. If you don’t have a username account at WordPress.org click http://wordpress.org/support/ and register one on the top right hand corner of the page that opens, so you can post to the support forums there and receive advice from WordPress.org bloggers.