According to the Facebook documentation, an array of posts for a page can be retrieved with any valid access token:
And indeed, using the Graph API Explorer it's possible to demonstrate this. When I copy this access token to my app (using Koala) I get the same result. So far so good.
But when I make the same request using my app access token I get an empty array.
It seems to depend on the page because for example this one doesn't display the same behavior
Any idea why this might be?
(Also, the API also seems to show a behaviour where if you specify a historical time period using 'since' & 'until' it returns more results than if no time period is specified. Can you shed any light on this? )
Clarification
The 'app access token' I am using is of the form MY_APP_ID|xXxXxXxXxXxXxXxXxXxXxXxXxXx and was generated by following the Facebook instructions on 'obtain app access token'