Access Token not valid.

Setup G-Calendar Plugin

  1. Go to Google APIs to create a OAuth Client
  2. Go to "Credentials" and create a new OAuth Client ID. (Create credentials > OAuth Client ID)
  3. Select "Web application" and give it a name.
  4. Add to "Authorised redirect URIs" and create the client.
  5. Copy the "Client ID" and "Client Secret" to the form above and save it.
  6. Last step is to Request the access token with the button below.