Apple TV Box replaced, can’t log into my Amazon Prime Account

I have Apple TV purchased in 2020, so it’s an older model. The box had a problem and Apple just replaced it. I paired with the remote and was able to add my apps, except for Amazon Prime. The app store only offers “get,” and when I press on that, the only option is to sign in with my Apple ID email, which is not the id I use for Amazon Prime. How can I get to a place where I can add the email I use for Amazon? I had no problem with installing and identifying myself to Hulu and Netflix.