Why is my purchased movie says its incompatible with Fire TV?

There's a discussion thread 9link below) with a reply that may be helpful

"Purchased movie won’t play - Apple Community

Eg:

Urquhart1244 says:

"The Apple TV app on any supported device should support all the content that is selectable through it.

1. Verify that your TV software and/or streaming device software are up-to-date. If a newer version is available, then older versions may no longer be supported for this app and its content.
2. Try a cold restart of the TV and/or streaming device.
3. Else please contact the iTunes Store staff for issues with specific purchased movies."