On the form you submit after completing a Middleman payment found here: Middleman Order - Step 1 of 2 - Provide Details | PlayerUp Accounts Marketplace. Player 2 Player Secure Platform. there is a box called "Order Number". A lot of my buyers don't know what that is when they pay via PayPal as it's called a "Transaction ID". Could you please reword this somehow: http://i.imgur.com/JIHY7oX.png so that it makes it easier? Maybe "Order Number" and "(Transaction ID) below it in parentheses.
This is already in queue. We're working on about 30+ projects right now. The site will be vastly improved by the end of the year and what you're requesting has already been put in the queue and discussed here as of a few weeks ago.