The app cant use in China

I live in China for a while and I download the app from the US App Store. Seems like the app doesnt support China. However the Zara, P&B and Forever21. Their app works fine in China. And I contact the developer for the app. They just dont care and ask me to use the website. If you dont take care your Customers. Your company will be closed soon.

♞MsDurex about H&M, v2.11.1