a how do I find out the apec of the deposit if I did not make it not pay?
[/quote]What do you mean by "make it not pay"? You haven't deposited yet?
In freebitco in, you can put a default withdrawal address in your profile which is tied with the account and can even be used to login.
That's one of the options in their instruction, sign a message using it unless it's a custodial service exchange's deposit address.

If you didn't set one, it will default to a random address which I believe they have the control.
That will leave you no option.