[Plugin: Jetpack by WordPress.com] register_http_request_failed

When I try to connect Jetpack to WordPress.com by clicking the “Connect to WordPress.com” green button, I get the following error message:

Jetpack could not contact WordPress.com: register_http_request_failed. This usually means something is incorrectly configured on your web host. Operation timed out after 15000 milliseconds with 0 bytes received

Jetpack was set up and connected to WordPress.com when I originally had the URL set up to be stage.sweatthestyle.com, but when we went live with https://www.sweatthestyle.com, I figured I should disconnect and re-register Jetpack. I did so and upon disconnecting, I was no longer able to re-register Jetpack due to the aforementioned error.

I’m currently running the virtual server off a virtual dedicated machine hosted by GoDaddy.

I have tried (in order):
– Removing and reinstalling the Jetpack plugin
– Rebooting the system
– Upgrading to WordPress 3.7.1 (from 3.7)

I’ve also installed the Jetpack Compatibility Test plugin in case it helps figuring out the issue:

Site info

SITE_URL: https://www.sweatthestyle.com
HOME_URL: https://www.sweatthestyle.com

TEST: HTTP Connection
Array
(
    [headers] => Array
        (
            [server] => nginx
            [date] => Thu, 14 Nov 2013 17:54:12 GMT
            [content-type] => text/plain;charset=utf-8
            [connection] => close
            [vary] => Cookie
            [x-pingback] => https://jetpack.wordpress.com/xmlrpc.php
            [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
        )

    [body] => OK
    [response] => Array
        (
            [code] => 200
            [message] => OK
        )

    [cookies] => Array
        (
        )

    [filename] =>
)

TEST: HTTPS Connection
WP_Error Object
(
    [errors] => Array
        (
            [http_request_failed] => Array
                (
                    [0] => couldn't connect to host
                )

        )

    [error_data] => Array
        (
        )

)

TEST: Self Connection
Array
(
    [headers] => Array
        (
            [date] => Thu, 14 Nov 2013 17:54:17 GMT
            [server] => Apache/2.2.15 (CentOS)
            [x-powered-by] => PHP/5.3.3
            [set-cookie] => PHPSESSID=i73jmi7pq67822divkbabc6ph4; path=/
            [expires] => Thu, 19 Nov 1981 08:52:00 GMT
            [cache-control] => no-store, no-cache, must-revalidate, post-check=0, pre-check=0
            [pragma] => no-cache
            [content-length] => 42
            [connection] => close
            [content-type] => text/plain; charset=UTF-8
        )

    [body] => XML-RPC server accepts POST requests only.
    [response] => Array
        (
            [code] => 200
            [message] => OK
        )

    [cookies] => Array
        (
            [0] => WP_Http_Cookie Object
                (
                    [name] => PHPSESSID
                    [value] => i73jmi7pq67822divkbabc6ph4
                    [expires] =>
                    [path] => /
                    [domain] => www.sweatthestyle.com
                )

        )

    [filename] =>
)

Any help would be appreciated!

Thanks,
David