Buy low, sell higher is two orders you set together: buy when the price falls to one level, then sell when it rises to another.
On a coin's chart, press the price where you want to buy. Then press "+ Then sell at a higher price" and type the price where you want to sell: its line climbs the chart as you type. Press Place and confirm. Both lines stand on the chart.
When the buy fills, the sale is placed for you at the second price. You do not have to come back between the two.
It is one setup for both ends of a trade, made on the chart where you can see the levels you are choosing.
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