OAuth Server to Server connection - error 4700 invalid redirect

Created a server-to-server OAuth connection for AWS, when attempting to log in to Zoom from AWS we are getting “Invalid redirect: https://us-east-1.console.aws.amazon.com/appflow/oauth (4700)”

Articles suggest that the URL is whitelisted from Zoom, not sure if this is a backend process that Zoom needs to perform or if we are missing something in our tenant?