I am becoming increasingly frustrated by this issue.
Scenario: I Setup Google Authentification using Firebase for my App. I have added all 3 Sha1 Keys to my Firebase Project Settings (Debug, Release and Published PlayStore App), Added the google-service.json to my Android App. Added the Sha1 Keys as OAuth 2.0 Client IDs on my console.cloud and created a webapplication I am referencing from my App using the CLient-ID.
On My Phone the Signup using Google works as expected...
As soon as I try and Signup using any other Phone the following Error message shows.
com.google.android.gms.common.api.ApiException: 10: Developer console is not set up correctly.
What am I missing, the Console is setup correctly to allow signup using my Phone, why arent other users not able to Signup. Have rechecked the SHA Keys and they are correct.