Can't use Podcast app after iOS 11

I am from Hong Kong, and after updating to iOS 11, it always shows "can't connect right now" whenever I try to use the podcast app across all my iOS devices. This problem doesn't happen on macOS. And no matter how many updates to iOS 11 (currently I am using iOS 11.1.2), this problem didn't get fixed. I try to report it to the apple genius in Apple Store but they all seem ignorant about it. I really hope that someone from the states can notice this problem and get it fixed in the next iOS update.