I am using plugin v3.0.1 with WP v3.4.2 and I have 3 the_content() functions being called by the page template. I get the message:
Your server doesn't allow remote HTTP requests using wp_remote_get. You will have to visit this page manually to update which blocks are used on each page.
When I visit a saved draft of the page using the link in the message and return to edit the page, Editable blocks does not show up and the message remains.
When I publish the page and visit it, the entire MCB box disappears (no message or Editable blocks) and the option in the "Screen Options" tab the MCB checkbox disappears.
I have contacted tech support for the host and they say that HTTP request is allowed:
Our Administrators have checked your request for allowing HTTP requests. The HTTP requests are allowed by default (otherwise your website would not be visible on the internet). We do no see any issues on our server configurations that might have caused the error you are getting.
Thanks, any help is appreciated.