Oh man, I already told you!
When you get 1 rebill, it adds to the Sold premium accounts column as well.
So in that last screenshot you've got 3 sales and 1 rebill. The reason there are 3 things listed when you click on the sales is because rebills aren't traceable as that's a user that already was registered and just expanded his/her account so it doesn't really come from 1 link, does it.
Also, when the rebill is added into sold premium accounts count then the money from rebill is also added. So basically those 3 sales+1 rebill is your 36.48$.