If you want to cancel your open orders from Bitkub application, click Bitkub App: How to cancel open order
1. Log in to your Bitkub account.
2. Click on the wallet icon on the top right corner and choose My Wallet.
3. Choose the coin that you want to cancel the open order and click "Trade".
4. You will see your buy/sell open orders in "My Open Orders" box. Click "Cancel" to continue the cancellation.
Remark: Once your order has been completely matched, you will not be able to cancel your order.