Unable to connect Jetpack

Hello,

I’m trying to connect Jetpack but I get the following error message:

Error Details: The Jetpack server could not communicate with your site’s XML-RPC URL. If you have the W3 Total Cache plugin installed, deactivate W3 Total Cache, try to Connect to WordPress.com again, reactivate W3 Total Cache, then clear W3 Total Cache’s cache.

However, I’m not using W3 Total Cache or any other Cache plugins. XMLRPC file is working fine, displaying the expected “XML-RPC server accepts POST requests only”. The only other plugins active at the moment are WooCommerce and Coming Soon page.

Not sure what else to do to connect Jetpack.

The page I need help with: [log in to see the link]