Jetpack is not connected to the site. Jetpack needs to be connected before we can check anything else, since that broken connection may be causing the problem.
Please contact your web host and check to see if they’re blocking or otherwise limiting incoming and outgoing connections over XML-RPC. You can ask them to check their security logs for any blocked requests to the /wordpress/xmlrpc.php file on your site, using the Jetpack by WordPress.com user agent.
Jetpack, the WordPress mobile apps, and some other plugins and services use this file to communicate with your site, but some hosts block connection requests to that file.
If your host, or a security plugin you’ve installed, only offers XML-RPC access by whitelisting IP addresses, then they will need to whitelist the IP addresses listed here: https://jetpack.com/support/how-to-add-jetpack-ips-allowlist/
Please note that these IP addresses could change (or more could be added) at any time. For that reason, we recommend your host uses the machine-readable versions of these IP ranges in JSON or plain text format to automate configuration changes on their systems.
Let us know how that goes!
