I’m confident that the server configuration is correct to allow this as I can curl the service and receive an oauth token using the client id and secret

curl -s -X POST <https://flyte.ourserver.com/oauth2/token> -H "Accept: application/json" -H "Cache-Control: no-cache" -H "Content-Type: application/x-www-form-urlencoded" -d "grant_type=client_credentials&scope=access_token&client_id=flytepropeller&client_secret=oursecret"