So I found a greifed area in the trade area which would causes you to lose the items you traded for. I gave the player in the screenshot 4 iron and 1 diamond for a wolf spawn egg. and the wolf spawn egg was lost. me nor this player is responsible for the greifing. I have a picture of the hole created to make items lost here. The area of the hole is in the 1st trading stall to the left.Please help me!