Oh yeah!!, The interactive movie i knew about.(i thought you had missed the previous season 4)
But they're still doing a complete season 5 in 2019, Question is when? From what i heard they're just late in releasing it.
The good thing is that my TV-package includes HBO/Netflix and i can freely exchange some of my tv-channels for one of them without any extra cost, I can do it 1 time per month and it only requires excluding some of my channels (Normally 4-5 out of 52)
But yes as you said the price depends/differs from what subscription you choose and of course what country you're located in, I don't mind people using Apple and i think they make very nice screens with high resolutions and neat designs, But what i can't stand about Apple is their customer service where they often outright lies to their customers and raise the price x4 when it comes to repair their customers products.
I wish i could be of some help, But i simply know nothing about Apple.
Have you tried different browsers with Mac?, Google chrome is most often very compatible with streaming on most devices (It just spies a lot on you), Or Firefox maybe?.