"Error Details: The Jetpack server was unable to communicate with your site https://yoursite.com[HTTP 403]. Ask your web host if they allow connections from WordPress.com. If you need further assistance, contact Jetpack Support: http://jetpack.com/support/"
Open File Manager in your control panel with our services. Navigate to the public_html folder by clicking on the public_html text. Click "Settings" in the upper right corner and enable "Show Hidden Files" then save.
Click on the .htaccess file then click the "Edit" button. Edit the .htaccess file and add the following code to the very bottom and save...
Allow from 126.96.36.199
Allow from 188.8.131.52
Deny from All