After you download the app, log in with your Amazon Prime or Prime Video account to watch. Browse available content and tap a title to watch it. On iOS and Android devices, you can also download a title by tapping the download icon from the video detail page.
Your hidden content from third-party apps reappears on your Continue Watching row after you watch it again. Tip: To unhide Prime Video content that you remove, visit the Hidden videos tab in your Prime Video Account & Settings: //amazon/gp/video/settings/hidden-history.