High profits low drawdown limited trades EA

Hi I have EA and Indicator Source code.

EA have Error
EA open multiple trades on signal
I asked previous coder 1 signal 1 trade but EA is opening multiple trades.

I want to add filter as well.

I want to change trade SL

IF SL can not be changed
Than I want to change trade opening place.

Rest all same as it is.

Who ever want to send me offer please need to sign NDA agreement.
and
After sign agreement I will discuss both steps and we can agree to final price offer.