Currently only support for en and jp servers :-/
We would need help from someone who plays Chinese and Taiwan servers to support them.
You seem to have programming experience from your profile. We're currently migrating the code to Kotlin (#108) which is Android's default language now and easy to learn for JAVA developers.
If you're willing to help, we can start supporting Chinese server. Chinese server does some things differently from NA and JP. So, unless we have someone who plays on it, we can't really make sure the app works correctly for it.
@MathewSachin I think it's only cards pictures issues. Currently only the cards priority not works. It's shown "can not detect card type" in the popup messages and select cards in natural order.
Yeah, I heard CN changed the design of the command cards. So, we need new images for them. Also, there are less number of images in CN folder. We need all the images that are there in En and Jp folders for Cn.
Here is a screenshot

I copped these images from your screenshot:
![]()
But, we need more images to support CN, specifically:
(or we can temporarily put En/Jp images for some low-priority ones to prevent errors)
lottery.png, StopGifts.png (will probably have to wait till next lottery on CN)
support_region_tool.png (Support Selection screen) ![]()
withdraw.png (Quest Failed screen where you're given the option to use Command Spells or retreat) ![]()
master_exp.png (Master Exp/Mystic Code EXP gain screen) 
master_lvl_up.png (Master Exp/Mystic Code Level up screen) (The same image from En/Jp might work here)
mat_rewards.png (Material Rewards screen which shows quest drops in a grid) 
retry.png (Connection to the server failed screen) ![]()