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oauth-2.0oauthgoogle-apigoogle-oauth

How to solve google Blocked app page with Oauth2?

I am an frontend developer who is new in using google api. And it's first time that I call oauth2 api.
But sadly I faced this page.
( translation:
Blocked app. App tried to access important information on your account. Google blocked this access to protect your account If you are developer, request certification about the app to google )

enter image description here

What I tried before I faced this page:

  1. adding People API
  2. adding redirection uri
  3. putting client_id when I call oauth api
    (https://accounts.google.com/o/oauth2/v2/auth)

When this page showed: I faced this page when I choosed the account (red square)

enter image description here

My senior said it showed because I called too much.
Is it possible that this page showed because of much calling API?

Solution

  • I found the reason. There was a scope trouble. Because deprecated Contacts API's scope is same as one of People API's scopes, scopes were conflicted. I made a new console project to solve it. Now, I use People API well.