Recently I am downloading movies from iTunes Store and books from iBooks Store. But one annoying thing that I've ran into these days are The Movie/iBooks store is unavailable. This is happening for a week now. I've checked the Apple's Service Availability Page but it says that everything is available. Here are screenshots:
This is happening on an iPhone 6s and iPad Pro if it does matter. My Apple ID country is China and my location is in China.