Things you need to check:
1. Confirm that your PHP version is higher than 5.4
2. Make sure that you have installed the jetpack required plugins. ( Required plugins will be shown in top ).
3. Some hosting will disable internet access in the server for security reason. Please check with your hosting if they are able to access ” https://jetpack.wordpress.com/jetpack ” in the server in which your domain is on.
Once all the above is checked jetpack should work. Well it worked for me after i did the above.. ??