In order to delete or modify an order, do the following steps:
Once logged in, please select the pair you would like to trade from the “Quotes” section or press “+” at the top right-hand corner in the Trade option.
You will be presented with a window where you can sell or buy the currency pair you choose.
If you want to edit any of the orders on the “Trade” tab, simply hold your finger against it for about one second.
When the “Modify” button is not active, the possible reason is that the new value of the Take Profit level has not been entered correctly.
The take-profit level:
For “long positions”, it is higher than the current market price. For “short positions”, the price is lower than the current market price.
So you will choose your parameters and modify your order.