[HTTP 447] error while trying connect to Jetpack

Hi @copylefter

At first glance, I didn’t see anything that would prevent Jetpack from being able to connect – your site is loading OK and the xmlrpc.php file displays as expected: https://social.nikadubrovsky.org/xmlrpc.php

I’d suggest contacting your hosting provider and asking them to check their security logs for any blocked requests to the xmlrpc.php file on your site, using the Jetpack by WordPress.com user agent.

You can also ask them to allow our 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, which could break your connection to Jetpack. For this reason, we actually discourage whitelisting specific IPs, although with some hosts it may be the only option.