Postman OAuth not working

I am attempting to test the API using Postman but I am unsuccessful in receiving an access token..

I am using the PureCloud v2 environment

The response is:

and the admin setting is:

If you look at the console logs/dev tools inside postman, do you see any errors? What is the URL of the page in that screenshot?

Unfortunately there are no logs to the Postman Console. I discovered using client credentials method works but not the authorization code. Further - it seems like using Postman Chrome gets me to the step of authorizing with PureCloud but not on the native Postman, and GETting the auth url in the browser grabs an actual auth code for me successfully. So suspecting this issue may be on the native Postman app.

Can you see what URL is being displayed? https://learning.getpostman.com/docs/postman/sending_api_requests/debugging_and_logs/

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This may be caused by postman not clearing some data properly. When on the failed login screen, open the postman chrome dev tools via View > Developer > Show Dev Tools (Current Shell). On the Application tab, clear all site data (cookies, session storage, local storage, etc.). Close the popup and retry and it should work.