Havn't tried in MAC OS but a web browser, like Opera, Chrome, Firefox, should work. I never use the apps regardless of OS, always use a browser and netflix,prime,etc etc work just fine.
Previous posters are correct, with macOS you have two ways to watch Prime Video - you can simply use your web browser (link below), or use the app (which as you note, requires macOS 11.4 or later).
The prime video app is relatively new. I wasn't even aware that it existed for macOS until I saw this post (I do use it on iPad however).
Watch now on Prime Video for a wide selection of movies, TV shows, live TV, and sports. Stream high-quality content anytime on any device. Sign up for Prime Video and start streaming today.
www.amazon.com
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HBO will not stream on Safari-Mojave-Mac mini but on the MacBook air, Mojave
therefore i use Edge for HBO on the mini, and will cancel HBO unless i can get that on the mini- safari.
an alternative is i could partition the mini for Catalina, but why?
all ad blockers are off and hborumors dot com don't care about mes