Single sign on with third-party app error. invalid_grant: Invalid authorization

I’m trying to set up SSO with a third-party app called Circle. I’m able to access the Auth0 login/sign-up portal, but not able to login or sign-up. It throws an error invalid_grant: Invalid authorization.
In my Machine to Machine application, the only modification I made was adding an item to Allowed Callback URLs and added ‘Authorization Code’ to Grant Types, everything else is kept as the default setting.
Is there anything else I need to pay attention to in the Auth0 Application configuration?
bugsnag_error_stacktrace_OAuth2__Error_event_61b048a3008a3b59afc60000.txt (11.8 KB)

It’s now solved. I should have used a “Regular Web Application” instead.

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Wohooo! Perfect, glad to hear that and thanks for sharing with the rest of community!