This USB stick Amzon Prime TV brings the error message 5505. Thus the USB stick for Fire Stick is unusable for PrimeTV.
Other time zone like USA does not help.
Other apps like Airscreen for transferring otherwise from Ipad with amazone prime tv app to TV is unusable.
Other solution that work
Will a cable from ipad to hdmi work for watching ?

I use Zattoo. With it, live content can be shown. But you can also watch time-shifted TV (for a fee, 90.- per year). It's a great replacement for SwisscomTV. By the way, the Amazon remote control also works with Zattoo. I am very satisfied with it. Prime TV in Switzerland is very limited or only possible with a lot of effort.

This is a streaming stick to use Amazon Prime Video. Live TV is not part of Amazon Prime. But the point of streaming services like Amazon and Netflix is to get away from these ad-infested dumps called TV channels.