Once you submit an order, you can always cancel your order in My Open Orders box.
However, once the order has been completely filled, that order will disappear from My Open Orders box and will be recorded in your Transaction History. Therefore, you CANNOT cancel your order once it's completely filled.
*** If your order is partially filled, you could still cancel the order which has not been matched yet. This will automatically stop your order process and your pending amount will be returned to your account.
If there's anything else that we could be of assistance, please do not hesitate to let us know. You may contact us from the details below.
Telephone: +66 2-032-9555