Answer 2: If you believe that you have 40$ but your account balance is showing only 18$, then it is possible that you have some open positions that are using the remaining 22$ of your balance. To verify this, you should check your open positions and see how much of your balance is being used. If you do have open positions, you should close them to make sure that you are able to access the full amount of your balance. Additionally, you should check your account history to make sure that all of your transactions are accurate and that you haven't been charged any unexpected fees. Once you have confirmed that your account balance is correct, you can use the full amount of your balance as you see fit.
