iwork gt charging and keyboard input error

I visited China this time and purchased the iwork Gt model.

1. When I came to Korea, I tried to use it, but it cannot be charged. Previously, there is a Chinese-standard charger, so I want to use a charger other than that one, but it cannot be used. (It can be used as an auxiliary battery.)

2. There is a keyboard input error. I want to use it in Korean, but I can’t input the desired characters. Please check this part.

The purchase was made in Taobao through a local friend.

I would appreciate it if you could tell me how to solve it.

1. The charger can be replaced with other suitable chargers with PD output of 45W and above.
2. You need to set the input method yourself for the language you need.

Charging is fine because it is a charger over 45w.

Please check if there are any other input methods other than setting Korean in the Language Input Method window.