How come my item flagged and deleted, as far as I know the item is never been recalled. 

What was the item you were trying to sell? 

Was it on here or RYS, if it was on here it was deleted because advertising of ANY kind is not allowed. If it was on RYS did it violate any of the rules? So many reasons....also it could have been flagged by many people. 

Cosco playpen, for 10$, I received an email that it's been flagged. But I noticed some listings are duplicated . 

Hmmm that's odd, I would email adam or austin.