"Error Details: The Jetpack server was unable to communicate with your site https://yoursite.com[HTTP 403].
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 188.8.131.52
Allow from 184.108.40.206
Deny from All
Once you've added the code, try again to connect to your site. If you're still having trouble, please contact Ultra support.