The Jetpack Post statistic Link just creates a link to your existing Jet Pack statistics,(but for each post)
You must first install the Jetpack Plugin on your site?
I assume you have done this?
If not install Jetpack and then this plugin will work.
This plugin just provides an alternative way to get to your post stats.
If you have jetpack installed, and it is still not working could you do the following.
1. Go to your Site Stats page and click on a link to the statistic for one of your posts (icon in your "Top Posts & Pages" section).
Note the URL it generates.
Does this work?
If this doesn't work then you have a problem with your jetpack installation, and you might like to try re-installing Jetpack. If its still not working then this is beyond my knowledge to fix.
2. Go to the the Post Admin page and click on one of my links, compare the URL.
At the time I wrote the plugin the URL's contained a &blog=nnnnn parameter on the URL, which I replicated in the Post statistic link plugin. This is done by reading a value out of your database and parsing the string.
Now the URL's for jetpack don't seem to need this &blog=nnnn parameter so try removing the &blog=nnn.
Let me know how you go