If you are a G Suite admin, you can add the Oauth ID (from the policy error page you get when you try to bind the account inside Insync) to your API whitelist in the Admin console. If you add the correct ID, it should show up as “Insync” in the whitelist section and, after waiting a few minutes, you should be able to use Insync again.

Thank you to Patrick Audley for this! Original post is available here

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