Greasy Fork

Hi
I installed TamperMonkey and the Prime Video downloader script but nothing happens, see the att. pictures. Actually no script is running, although enabled. Can anyone tell how this downloader works?
Thanks!

And what URL did you try it on?

Prime Video, I added a new att. The script is enabled but nothing happens...

There's no button from my script while watching. There's one on the movie/series page. That's why I asked which URL, THE EXACT URL, because maybe Amazon changed something and I need to make my script work with a different URL.