Google Login is rejected from Google

[anhthoai]

Hello,
Google reject OAuth applications because the Google sign-in button or any button used to launch Google OAuth is not complies with the Google sign-in branding guidelines https://developers.google.com/identity/branding-guidelines#top_of_page
Please update it.

 

[Rodolfo]

Google Sign-In and other third party sign-in options​

Equal prominence​

The Google Sign-In button must be displayed at least as prominently as other third party sign-in options. For example, buttons should be approximately the same size and have similar visual weight.

Matching your own app's style​

Using the standard Google Sign-In button is strongly recommended as it enables Google users to more quickly identify the Google option. If you need to to adapt the button to match your app design or translate the text "Sign in with" or "Sign in", follow these guidelines.

TL,DR: If you enable more OAuth providers they won't complain. Google won't be able to push you in order to use they full-flagged style button if you also enable other sing-in options.