When trying to install Jetpack on a very fresh WP site, all I see is this. It never moves from this. I've already deactivated all plugins.
That may happen if your hosting plan doesn't have enough resources to download and unzip the plugin folder. Could you try to install the plugin manually as explained here:
http://codex.wordpress.org/Managing_Plugins#Manual_Plugin_Installation
Let me know how it goes.
Coincidentally, my new site appears to have malware when viewed on mobile. http://www.nathanabshire.com.
I don't notice anything wrong with your site on mobile right now, and a security scan doesn't return anything either:
https://sitecheck.sucuri.net/results/www.nathanabshire.com/
Have you managed to solve that issue on your own?