Good news as I got it working!!
It SEEMS that you need to create a blog at wordpress.com first. Even if you have your own self host WordPress blog.
Now once you’ve created the blog, go to your Global Dashboard on WordPress.com -> Site Stats.
You’ll see the stats and you’ll see My Blog (Dashboard) [DROPDOWN] + Switch button.
Now all you need to do is choose your selfhosted WordPress blog from that dropdown menu and click on the Switch button.
[EDIT: Make sure that Jetpack is connected to WordPress.com]
As soon as you’ve done this, you can view the stats again through your OWN dashboard!
This did the trick for me, so perhaps it might help you as well!