Bug Facebook API (unable to validate token)

Hello
I'm having a problem with the Facebook Authentication Provider, when I make a post request to the API, it gives a 401 response code.

Code (CSharp):

1.  
2. {
3. "title": "PERMISSION_DENIED",
4. "detail": "unable to validate token",
5. "details": [],
6. "status": 401
7. }
8.  

The app ID and app secret are set correctly.
I have tested a real facebook profile in live and development mode and i have tried to use the token generated from facebook developer console and i have the same result.

Updated
I found a problem in the permission granted, my Facebook app type is gaming service and I have gaming_profile permission instead of public_profile , i tested with non gaming service type with public_profile perminssion and its working