Window pop ups?
Anyway, whan any EA does in general is to check how many trades exists, to check some other things and to create new trades. "Buy now" and "Sell now" blocks, when you run them, they are going to make a new trade every time. So the should manage how often these blocks run. How... with other blocks such as "No trade", "Once per bar", "Condition" or others. Blocks like "No trade" also have filter settings inside.
