While connecting your Google Drive in Settings of your WaveNetVocalizer, if you encounter such an error which may say "This app isn't verified...." here is how you can bypass this error message:

1. Click Advanced

2. Click Go to wavenetvocalizer.com to continue connecting your Google Drive. Simply follow the instructions on the next steps. 

However, you may also watch the tutorial video on this topic. Click the following link to watch tutorial: How To Connect Google Drive