I am unable to see the response body and I am not getting Pretty option as well when I run any of the methods. Screenshot below. Please let me know how to get that. I have postman 11.50.1 version.
Welcome to the Postman Community! 
You have a previous request’s history open and not the current request.
Next to the request name, you can see the timestamp label. Hit the x in the label and it will show the current request.
You can also select the current request from the dropdown, next to the Test Results option in the response pane.