Use port-forward to access the Kubeflow dashboard.
kubectl port-forward svc/istio-ingressgateway -n istio-system 8080:80
You can now access the dashboard at localhost:8080 if you are running on your own machine. If you are running in Cloud9, click Preview -> Preview running application. You must leave the port-forward command running in order to use the dashboard. In a production environment, we'd change the dashboard to use a load balancer with authentication, but port forwarding is fine for development purposes.
Once you have the dashboard open, click Start Setup and enter smoperators for the Namespace Name. After clicking Finish, if the dashboard does not appear, refresh the page. Finally, select the smoperators namespace using the drop-down at the top of the page.