UE4 Community is... .... not really the best.

Absolutely not, as i said, i already got the solution by myself, and when it’s not the case, i got some coworker to help me.

I simply try to point out something we can improve, but your behavior is strange and look like you take criticism like a personal offense.
That not the goal, but by experience, no point to go further if you want to go in this direction.