This EA works pretty well on backtesting however does not open trade on a demo or live

I got my hands on an old EA source code which works perfectly on back testing however does not seem to work well on FT such as demo or live account.

 It did however open on its own on a demo i've ran for almost a week but on back testing on same period it has opened more than 10. 

I've checked the expert and journal and it seems no errors detected.  

The initial setting does need to be changed to work based on broker spread and etc... such as SL to at least 10, trailing to at least 4. 

 Please help Thanks