Jetpack not emailing new posts to subscribers.

I installed the official Facebook plug-in and since then Jetpack is no longer emailing my subscribers when I publish a new blog post. I have uninstalled Jetpack and reinstalled it, but still not working. I tried to install the Jetpack compatibility tester, but it wouldn’t install. This is the fourth time I’ve posted about this. Can someone please answer with some help? My site is louise-allan.com