Why cant I review!

Level 1
I just bought three items from a guy. So i went and meet him and made the buys. Now im trying to leave a review but there isnt that option anywhere! How can i leave him a review?
And how do we add the items to my purchases list?
Can anyone please spare a minute of their time and give me some pointers? It would be very much appreciated!
Level 9
Unfortunately this is a major flaw in the offer up system. The buyer has to mark the item is sold Then select that they sold it to you. If they selected that they sold it to someone else or sold it somewhere Else there is no way to leave a rating.