I see you've also opened a Trac ticket about your issue. I closed it for now, since we're not sure the problem is related to a bug in Jetpack yet. I copied the relevant error message below:
Your website needs to be publicly accessible to use Jetpack: site_inaccessible Error Details: The Jetpack server was unable to communicate with your site [IXR -32300: transport error: http_request_failed Operation timed out after 15391 milliseconds with 0 out of -1 bytes received]
I am hosted by Go Daddy
Could you let me know your site URL or send me an email about the issue?
Thanks!