what is the settings, and what should i use to play Blade & Soul NA servers from Singapore?
It seems you already equipped a game item “Blade and Soul”. However please check
* It seems you’re using TCP as connection protocol (under “Setup -> Program” menu) Is it intentional? If it’s working with UDP, please use it.
* You’re using “advanced mode” of mudfish node option. Is it not enough to use only one mudfish node?
I don’t know what to choose, and this is my first time using, the free balance was used up like real quick, so this is my first purchase, i’ve use WTFast before, but this mudfish complicate me more.
Don’t worry about your payment. I can refund your credit 100% if you request it within 2 weeks. 
I agree with your opinion that mudfish is a complicated one and I’m still trying to improve UX and UI design though it’s always not enough because I’m more closer to C language developer.
If you’re not easy to pick a mudfish node then please see FAQ - Nodes about how to pick one. And if you have other questions, please feel free to ask anything.
Sure. If you encounter any problems please feel free to ask anything.