site cannot communicate properly with jetpack

This is occurring when I go to “debug” on both our main site and a subdomain. They have different themes and a different array of plugins. Can someone help me troubleshoot this? I’m not sure where to even begin.

SELF:
	Array
(
    [headers] => Array
        (
            [server] => nginx
            [date] => Fri, 08 Apr 2016 08:26:22 GMT
            [content-type] => text/plain;charset=utf-8
            [connection] => close
            [expires] => Wed, 11 Jan 1984 05:00:00 GMT
            [cache-control] => no-cache, must-revalidate, max-age=60
            [pragma] => no-cache
            [x-hacker] => Jetpack Test
            [x-ac] => 3.sjc _bur
            [strict-transport-security] => max-age=15552000
        )

    [body] => {"error":"Could not access your home page","error_description":"We were unable to access the homepage of your Jetpack-powered site."}
    [response] => Array
        (
            [code] => 400
            [message] => Bad Request
        )

    [cookies] => Array
        (
        )

    [filename] =>
)

https://wordpress.org/plugins/jetpack/