Huan, I feel sorry about you and all people who get scammed by unfair cheaters and sellers.
Everything's ok when somebody's using free EA. It's acceptable to use cracked EA until you're sure it's not just another scam and then buy it.
What is 100% unacceptable is take free EA and then sell it with minor changes taking advantage of somebody else's work.
I hope there will be more people coming here and reading about this SCAM. It's so unfair. Sadly but true, this is a common practice in the forex world nowadays.
"In trading, winning is frequently a question of luck, but losing is always a matter of skill."