IBKR Mobile for iOS

How can I download or update IBKR Mobile/IBKR Global Trader in Mainland China?
How can I download or update IBKR Mobile/IBKR Global Trader if I cannot locate it on my app store?
Why does my Order Preset for Stocks require a correction?
I downloaded IBKR Mobile for the iPad, but I can not find it.
How do you manually update IBKR Mobile in the Apple App Store?
What are the display limits for Watchlists, positions, live orders and trades on IBKR Mobile?