I made it, i could solve the problem, to get to user that send the message is done you have to use the follow endpoint https://graph.facebook.com/vx.0/IDMESSAGE?fields=message,attachments,created_time,to,from&access_token=token, and the request response would { "message": "xxxx", "created_time": "xxxxx", "to": { "data": [ { "name": "xxxxx", "email": "xxxxx", "id": "xxxxx" } ] }, "from": { "name": "xxxxx", "email": "xxxx", "id": "xxxx" }, "id": "xxxxx" } you can see the property from, is the message user. in my case the message id start with m_-mmKbiFxxxxxxxx The method request is GET and remember.

same here. I get all of my media id's.Then trying to get info about the media.

This code works:

id1?fields=media_url

This code does not work:

id2?fields=media_url

The IDs must be correct, cause I got them from the API Call media.

I got all the permissions of the user.