I think I worked out a fix. I have a fire cube. I selected a movie to watch, the 5 min preview you get. I pushed up on the controller to turn on CC closed captions. I then hit right - the wrench icon, select button and got presented with a splash screen for activation.
I think this was how I did it. I tried everything before this and was just lucky! Hope it helps.
"Same proble why should we call TNT when it amazon device with the proble. I deleted the all catch . I made sure nothing was there and restarted my fire stick reload app same proble.Amazon needs to take care of this" Judyxmas, unfortunately Amazon tells the folks licensing their product for development what parameters to utilize and how to program the interface with the Firestick. It is up to the application developer (Hulu, Fox etc.) to properly implement an application and it is out of Amazon's control short of not permitting the application to utilize their platform. It is even a greater issue with televisions that have the Fire television application within the television hardware. My experience with those televisions is that they are so far behind with their updates, it is not worth even using that product. My opinion is that Amazon has a sufficiently large market share that discontinuing their licensing of their product to televisions generates sufficiently bad press that it is not worth supporting.
I have an Amazon Fire Stick and I was finally able to fix this!
I don't know if this will work for everyone, but I did a variant on what techno_nerd suggested earlier.
Steps: --> Select a 5 minute preview video and play it. While it's playing, I pushed UP on the Amazon remote which took me to the CC (closed captions) button. Then I pushed LEFT on the remote and it moved the cursor down and to the left to the SIGN IN cursor. Select it (push enter). This finally took me to an activation screen. I did have to exit the app after activating and open it again for changes to apply. Good luck!
Unfortunately, it appears to me that the log on icon beyond spotlight is TNT code and not Amazon's code. I am able to move to that icon and it displays version # 4.19.0 build # 1903261621. I went to the apps * icon from Amazon to see if I could get the version number from another source; however, I have not been able to find that. Perhaps you might be able to find it a different way; however, the version I have identified works on my system. Please note that this is not an issue that Amazon would be able to fix. If it is an issue the solution unfortunately rests with TNT and their implementation of the Amazon fire API.