CRITICAL ERROR

I received the message critical error when I tried to access my website and then the same when I tried to access the dashboard for this site. the most recent update/change that was made was reconnecting jetpack after it was disconnected on its own for an unknown reason. I have since disconnected from jetpack and since doing so I can no longer see my site in my dashboard or in my account settings. Not sure what I need to do to reconnect my site to my account but any help would be greatly appreciated. attached is a screen shot of the error message.

The page I need help with: [log in to see the link]