You can only cancel your order if your order belongs to "Limit orders"(Limit, Stop Limit). Please follow the steps below:
【PC web】
Login > [Orders] on the top right of the screen > [Trade] > [Order History] > Choose your specific order > Cancel
【Mobile web】
Log in > Human-shaped icon on the top right of the screen > [Orders] > [Trade] > [Order History] > Choose your specific order > Cancel
【App】
Log in > Human-shaped icon on the top left of the screen > [Orders] > [Trade] > [Order History] > Choose your specific order > Cancel
*However, please note that once a contract has been made, it cannot be canceled.
*You can't cancel "Market orders" (Market, Stop Market)
If you have further inquiries, please don't hesitate to contact our Support Team via "Contact Us" function.