Hey Ali,
Thanks for responding so quickly and for verifying that the service was working on your end. The issue was that my server did not have the PHP cURL library installed. The fb_connect method was failing/exiting at the point of curl initialization and therefore was returning an empty 200 response. Once the cURL library was installed, this fixed the issue.
As part of a future release, it may be beneficial to return an error in the event that cURL is not installed or refactor to make use of the WordPress HTTP API in lieu of cURL.
Thanks again for the help!
In addition, I’ve tested my access_token using the facebook graph /me REST endpoint and the response is fine.
So https://graph.facebook.com/me/?fields=id,first_name,last_name,email&access_token=CAAV2hZCaUgyYBANkY... returns a JSON object containing all of the specified fields with the correct values.
