Authentication failed. Prompt shows 400 Bad Request

[rico345100]

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Describe the bug
When a game launches, it calls "PlayGamesPlatform.Instance.Authenticate()" and it instantly returns false with a callback. On my phone, something popped up and said, this game is not approved by Google(because this game is in internal/alpha testing). tap continue, and it shows "Something went wrong" and "400 Bad Request," and there's nothing I can do.

To Reproduce
Steps to reproduce the behavior:

1. Call PlayGamesPlatform.Instance.Authenticate()
2. Done

Expected behavior
Should be able to sign in GPGS

Observed behavior
I explained everything above. If you need anything more specific, let me know. All I can say is that the game is in the development stage(Internal Testing and Alpha Testing)

Bug Report
Capture a bug report and share the Google Drive link. If the bug report contains sensitive information, then make it private and only give access to requests from [email protected] accounts.

Screenshots

Versions

• Unity version: 2021.3.13f1
• Google Play Games Plugin for Unity version: 0.10.14