


To find the developer contact information: You can also contact the app developer and ask them to update their app to use more secure authorization methods. If the operating system (OS) on which the app is installed is outdated, update the OS to the latest version.If you aren't using the latest version of the app, update your app to the latest version and try again. If the app is blocked because it uses an unsupported authorization method, you may be directed to an “Error 400” page that says “Access blocked: App sent an invalid request.” Learn more about how your data is shared with third-party apps App sent an invalid request To help protect your account, Google sign-in requests are blocked from apps with less secure authorization methods because they’re more vulnerable to phishing and app impersonation attacks. Google has safe ways for users to sign in and share their Google Account data with third-party applications.
