I checked your site again, and currently it is showing transport error: http_request_failed cURL error 28: Operation timed out after 15001 milliseconds with 0 bytes received error.
Generally, seeing the timeout error like that and not being able to connect at all points to something on your server blocking Jetpack.
In this case, I would recommend reaching out to your web host to first make sure that Jetpack is not getting blocked or limited or is prevented from accessing your xmlrpc.php file: https://YOURSITENAME.us/wp/xmlrpc.php. This file is used by Jetpack and other plugins and apps to connect to your site. For the best results, you could also have them whitelist the Jetpack IP ranges noted on this page:
If you’re unsure about this, you may contact your hosting provider; they should be able to help you with this. 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 me know how it goes!
The other thing I want to point is it seems that although your domain has a valid SSL certificate, it is still possible for one to access your site via HTTP. In fact, your visitors and search engines can use either HTTP (https://YOURSITENAME.us) or HTTPS (https://YOURSITENAME.us) to access your site.
This is an issue for search engines, since it often causes confusion and duplicate content, but it is also an issue for your site’s communication with WordPress.com, as our system does not know whether it should connect to your site via one or the other address.
To solve this issue, I would recommend that you change your site’s URL to HTTPS (you can do so under Settings > General in your dashboard), and then ask your host for help redirecting all traffic from HTTP to HTTPS.