How do I activate subtitles in Amazon Prime on my laptop?

So how do you activate them on the TV I know. Since that's all described above, but on my laptop I can't find these settings. At the most when I click on the video I want to watch. Since then the subtitles and the playback language are displayed, but they can't be activated anyway. If I click 'off' on subtitles nothing happens and with 'subtitle settings' you can already guess that you can only set how you want the subtitles. Can anybody help me further?

It may be that there are no subtitles for this series or follow.

Seems more like there's no subtitle for the movie.

But it had worked on television… So follow the same