You state in your documentation that you support Google authentication integration via OpenID. However Google has closed registrations to use its OpenID provider many months ago. So currently there is no way I can integrate your product with our enterprise. Please update your documentation.
Additionally, they are turning off their OpenID 2.0 service completely by the middle of next year. And I don't see any mention of supporting this in the Harmony release. So as of next year, there won't be any way for current and new customers to integrate with Google auth.