title: Android TTS returns "Quota exceeded" for offline voices
body: <p>I have been using Google TextToSpeech for a long time in my apps, many of my users are using the offline voices so I had no problem with the number of resources using. But after receiving the latest update of GoogleTTS all of my users are getting the following error</p>
  
  <pre><code>03-13 14:42:29.298 29525-29571/? E/TTS.NetworkSynthesizer: ExecutionException during NetworkFetchTask
      java.util.concurrent.ExecutionException: clx: RESOURCE_EXHAUSTED: Quota exceeded for quota metric 's3-sessions' and limit 's3-session-limit' of service 'speechs3proto2-pa.googleapis.com' for consumer 'project_number:...'.
  </code></pre>
  
  <p>Has google been adding new limitations to the offline tts, or is it some changes which has made my app use the online version of google tts? Anyway I would be more than thankful if anyone could guide me through this problem.</p>