I have tested wp_remote_post and wp_remote_get with the url “http://codex.wordpress.org/Function_Reference/wp_remote_post” and it works.
I have tested wp_remote_post and wp_remote_get with the url “http://connect.advancedcustomfields.com/index.php?a=get-info&p=pro” and it does not work either time, returning the message I pasted earlier.
I also tested the url “http://assets.advancedcustomfields.com/add-ons/add-ons.json”, and “http://www.advancedcustomfields.com/” and they fail the same.
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