Help with OAuth for multiple users

Hello, guys.

I’m creating a website for creators interact with their members.

The creator will authenticate with OAuth, which will set his creator account.

The members will also authenticate with OAuth so we can validate if it is an active member of that creator.

For simulating that, I create an account A (creator) and an account B (member).

I also created the API keys using the account A.

When using the OAuth with account A, it works fine.

When using the OAuth with the account B, I get this error:

{
    "errors":
    [
        {
            "id": "...",
            "code_name": "OAuthClientViewForbidden",
            "code": null,
            "title": "You do not have permission to view this OAuth Client.",
            "detail": "You do not have permission to view OAuth Client with id ...",
            "status": "403"
        }
    ]
}

I’m running everything on my local machine (the OAuth redirects do localhost) using Ruby on Rails.

Is there any way to authenticate with other account rather than the API key creator?

Thanks for your support!