Once you register your Amazon Fire TV device and connect it to the internet, add the DIRECTV STREAM app.
Make sure you have your DIRECTV STREAM credentials ready so you can sign in.
Important: Accessing the DIRECTV STREAM app on your Amazon Fire devices will also be limited to your home Wi-Fi network. You can change your Home Wi-Fi network up to 4 times within a 12-month period by relocating your Gemini (DIRECTV) device.