I am using a strategy where for example the second position I open is double the first position (is just an example)....
I have tried different cryptocurrency exchanges but they open my order with a different amount than the one I had chosen...
do you guys know any cryptocurrency exchange that opens my orders exactly with the amount I choose?
I am not sure I get what you mean...
Do you have any screenshots? Maybe that would help me understand better what you are talking about?
Are you using limit orders or stop orders?