Jetpack Doesn't Exist

I hadn’t updated my site, coachsrant.com, since March 30th, and when I logged in earlier this week, Jetpack was gone. There are no site stats available whatsoever. When I look in my installed plugins, it’s not there. However, when I try to reinstall it, it says that the destination already exists. I don’t have much experience with coding so I really don’t know how to fix the problem on my own. I’m afraid I’m going to screw something else up if I go messing with the CSS. I’ve read a lot of articles about the recent WordPress leaks, which I know have something to do with this, but I’ve yet to find any information on how to get jetpack back on my site.

Please let me know how to fix this problem.

Thanks

https://www.ads-software.com/plugins/jetpack/