If your item isn't shown in your receipts, this means that you didn't purchase the item using the BUY button.
If so, your transaction is likely to be without any protection. Please ensure that you only ever transact using the BUY button so you’re fully protected in case something goes wrong.
So that we can take action against the seller, please let us know if your item hasn't arrived. You can do this by going to the seller's profile, tap the three dots in the top right hand corner, Report user, I haven't received my item, Item not shown.