We are using Nginx ingress operator version 0.2.0 and the controller version 1.11.1. Following steps are completed to deploy the CRD and operator.

After creating the required namespace by running the command kubectl create namespace ingress-nginx , I am able to get the resources(pod,service,deployment,replica set) successfully.

Can you try again by changing the nginx controller and operator versions to the latest one and also check the configurations correctly.