Sorry I have the same problem as many people that have posted on the forum
I am trying to watch Amazone prime on the app on my set top box. I can log in into Amazon Prime, I can see the menue and all the programme listings but when I select one to watch, it comes with a turning wheel on a black background and nothing happens.
all the other apps are working fine I am just having a problem with amazon video. I tried what you advised “ resetting the network connection” but I am still having the same problem. It’s very frustrating.