If I Think The Expert Advisor Opened A Position In The Wrong Direction, Or I Have Any Other Reasons, Shall I Intervene In The Trading Of The ea?
I personally do not recommend to touch the expert advisor when it is trading. Now, the ea trades or what? I run the demo ea until I am convinced that I can trust it. If this confidence is not developed, it is not my ea. If I intervened, I would never be sure, so would always watch it, and it would be the same as I would trade myself. If I trust the expert advisor, I let it do the same it did during demo: earn money.
No matter you trade with or without a forex robot, you only should send money to your Forex account, that would not be missing, if you lost it!