By default, all comments are blocked when activating CloudProxy (they block access to the xmlrpc.php).
If you’d like to allow comments on your site, you can easily revert this. Just go to your CloudProxy’s dashboard and click on Settings and then on “Security”.
Scroll down and you’ll see all your security options. Switch to OFF the option that says “XMLRPC, Comments and Trackbacks blocked.”
This is what you should see:
Users should now be able to post comments.