Hello @Loxiran
Unfortunately an old familiar issue. I recently bought two films, neither of which can be played via the Apple app on the Box 5. Addendum there is a third film that does not work. And the films don’t run on Box 21 either. I get the same error message as you. Interestingly, the 3rd film is from a series of 3 films and the other 2 are running.
On the Apple TV, however, all films work. But I’ve also had this with included series. After a few weeks, it suddenly worked on Box 5. Of course, waiting is not an option with rental films.
Unfortunately, Swisscom and Apple are passing the buck to each other. Although I maintain that it’s Apple’s fault. And if you look at the reviews in the Play Store, you quickly realise that satisfaction is very mixed.
I’m no longer annoyed. If it doesn’t work via the box, I just switch to the ATV. Same as Play Suisse. The app also didn’t work from Wednesday evening until yesterday evening. There was always the message No network connection. But everything else worked.