Facebook posting error

I am trying to post image and text on facebook account but when I use different account than my facebook game app account it rejects my posting displaying following message on xcode

 403: forbidden
 Replacements.RemotingServices:CreateClientProxy(Type, String, Object[])
 UnityEngine.Debug:Internal_Log(Int32, String, Object)
 UnityEngine.Debug:LogWarning(Object)
 SPFacebook:PostCallBack(FBResult)
 Facebook.FacebookDelegate:Invoke(FBResult)
 AppManager:set_IsLandscapeModeActive(Boolean)
 Facebook.<Start>c__Iterator0:MoveNext()
 Replacements.RemotingServices:CreateClientProxy(Type, String, Object[])
  
 (Filename: /Users/builduser/buildslave/unity/build/artifacts/iPhonePlayer-armv7-il2cppGenerated/UnityEngineDebug.cpp Line: 56)
 
 Opps, post failed, something was wrong
 Replacements.RemotingServices:CreateClientProxy(Type, String, Object[])
 UnityEngine.Debug:Internal_Log(Int32, String, Object)
 UnityEngine.Debug:Log(Object)
 FacebookPosting:OnPostFailed(CEvent)
 DataEventHandlerFunction:Invoke(CEvent)
 AppManager:set_IsLandscapeModeActive(Boolean)
 EventDispatcher:dispatch(Int32, Object, String)
 EventDispatcher:dispatch(String, Object)
 AppManager:set_IsLandscapeModeActive(Boolean)
 SPFacebook:PostCallBack(FBResult)
 Facebook.FacebookDelegate:Invoke(FBResult)
 AppManager:set_IsLandscapeModeActive(Boolean)
 Facebook.<Start>c__Iterator0:MoveNext()
 Replacements.RemotingServices:CreateClientProxy(Type, String, Object[])
  
 (Filename: /Users/builduser/buildslave/unity/build/artifacts/iPhonePlayer-armv7-il2cppGenerated/UnityEngineDebug.cpp Line: 56)

At login time, I am asking for following permissions,

 SPFacebook.instance.Login ("email,publish_actions");

Before same code working for me but now it creating problem for me. I think facebook has updated some of its policy. Please give some opinions in this.