Apple TV on Fire stick says I have to buy what I
I just bought an Amazon 4K Fire stick and set it up. The first thing I did was add Apple TV.
When I first tried to add it, I gave it my user name and password. It sat there, with the spinner on, saying it was signing on. Five minutes later, still spinning. Go to another app and back. Still spinning.
I had to remove Apple TV from the device, unplug it, restart it, then add Apple TV again. This time it took and I could sign in. The main reason I mention it is in case this is a symptom of something else.
Once I got it working, I wanted to see if everything transferred. (I haven't yet used Apple TV on anything but my Apple TV device.) I didn't know if my subscriptions to other services, like Netflix or Britbox would transfer over, so I wanted to see if all that was available.
I did a search for an old British comedy and found it. I tried to watch it and got the "How to Watch" button. Pressed it, did whatever it asked (I don't remember now, that was an hour or two ago) and came back and tried to watch it again.
No matter what I try to watch on Apple TV on my Fire, I can't - I get a "How to Watch" button. I get a message that I can't buy anything on that device and I have to buy it on an Apple device first. All of the shows or movies I try to watch give me the same thing.
I also have Netflix and use that on my Apple TV, but when I tried to search for "Stranger Things" within the Apple TV app on Fire, I could not find it.
Remember, I have a subscription to BritBox and Apple TV works fine on my Apple TV device, but on my Amazon Fire, Apple TV apparently thinks I have no subscriptions.
Does Apple TV, on other devices, only access Apple's content and stuff like my Apple Music contents? Or should I be able to see everything on my Apple TV app on Fire that I can see on my Apple TV?