Ao tentar obter o status da assinatura no aplicativo do Android (com data de validade), recebo a seguinte mensagem de erro:

{
 "error": {
  "errors": [
   {
    "domain": "androidpublisher",
    "reason": "projectNotLinked",
    "message": "The project id used to call the Google Play Developer API has not been linked in the, Google Play Developer Console."
   }
  ],
  "code": 403,
  "message": "The project id used to call the Google Play Developer API has not been linked in the Google Play Developer Console."
 }
}

O URL é:https://www.googleapis.com/androidpublisher/v2/applications/[packageName{/inapp/[productIdorgeous/purchases/[purchase_token{??ccess_token=?access_token=[access_token]

Diz que o ID do projeto não está vinculado. Eu fiz o seguinte:

1. Create the project in Google Developer Console.
2. Turn on the Google Android Publisher API.
3. Link the project ID as mentioned in API access page (https://developers.google.com/android-publisher/getting_started)
4. Fill in the packageName, productId (from in app-purchase), purchase_token (from Android app)

Não sei por que a mensagem de erro aparece como acima. Eu tentei com o playground OAuth2 sem sorte (https://developers.google.com/oauthplayground/)