I solved my own problem. There are two apps on the Fire Stick that look similar. One is called "Sling Television" and one is called "SlingPlayer". I was trying to login to the "Sling Television" app thinking that was the "SlingPlayer" app and I was wrong. That's easy to do because the "Sling Television" app shows up by default on the Fire Stick and the "SlingPlayer" app doesn't show up at all until you go to amazon.com and select it for download to your Fire Stick. That's another thing I learned today...in order to get the "SlingPlayer" app, I had to go to amazon.com on my laptop PC and order the "SlingPlayer" app and push it to my Fire Stick. Problem solved.