Thank so much. This finally worked. So frustrating... Had to unplug TV before the de-registration would show me a new code on the TV...but that did the trick and allowed me to sign in again...
I tried all of the above with no results. My tv showed the prime icon on the screen however, when I selected it the screen went black, no connection at all to the app. The only thing that worked was signing out of prime on my phone and performing a factory reset on my TV. Then the TV was able to connect to prime and I reconnected it to my account. 😃
Same problem here (Kauai, HI). I have spent hours on the phone and chat with Samsung and also with Amazon Tech support. Today I was on chat with Samsung and after going through the same shut down, start up, sign in again, yada yada and at the end of the session I was told that Samsung was going to issue a software update to the Amazon Prime Video app in the next two weeks. Anyone else heart this?
So I have been having a similar problem with the prime video app, however the screen either is completely gray and if I select whatever the cursor is on and that will play but it's a total shot in the dark or selecting the app only gets a flashing "prime video" logo and nothing less happens. Any suggestions?