I am having this exact same issue. I have tried deactivating all plugins and tried reconnecting, have changed my theme from the standard Twenty Thirteen to Twenty Twelve as suggested, but I get the same transport error message as “pickyourself” above,
Your website needs to be publicly accessible to use Jetpack: site_inaccessible
Error Details: The Jetpack server was unable to communicate with your site https://myzangoo.com [IXR -32300: transport error: http_request_failed Operation timed out after 15193 milliseconds with 0 out of -1 bytes received]
And when I try to reinstall WordPress I get
500 (Internal Server)Error
I even completely deleted WordPress and all databases off of my GoDaddy hosting account, then did a complete reinstall, but the same issues persist. Please help!!