I subscribe to discovery+ on Prime Video. Can I sign in on the discovery+ app? 10 March 2026 13:44 Updated If you subscribe to discovery+ with Prime Video, you can only watch through the Prime Video app. Related articles How can I watch discovery+ on my TV or connected device? How do I activate my device? How do I cancel my subscription? What devices can I stream discovery+ on? What devices will I no longer be able to watch on?