If you are doubting that Amazon Prime 4k Ultra HD will play on your TV I can assure you it works if you have a TV made in 2014 or later (Amazon quote), I have a 2016 Samsung KS9000. It is a bit fiddly to get it to work but once you figure it out it will become usable. Thanks for watching and please subscribe.
Amazon Prime also works on a browser on Windows 10 and many other operating systems.
Check out my sites
https://sites.google.com/view/fxv300tech/home
https://sites.google.com/site/windows10okok/
https://sites.google.com/view/fxv300/