Stuck at installing process

Hello guy,

I'm from sea server and I recently try to play vain from China server. I come across here and then I download vain from TapTap. Everything seem fine until installation time. It takes me just too much time and it is still in installing process( I've been waiting for around 2h and nothing happened ). I already try reinstall the app and try using other phone to install the app too, but I still get the same long and long installing process without end. Could anybody help me please? I really wanted to play vain. Thank you