To request the payment you should send the invoice at Sprintrade.
Follow the steps below:
1) login in the publisher panel
2) check if your financial details are correct: goes to Settings/financial details and write your payment information/VAT/Tax number.
3) goes to Settings/Account Journal,
4) click on the link "Note: Your account balance is above the minimum payout. In order to perform a payment click here."
5) check if all the info of the Payout request are correct,
6) fill in the boxes "Your Invoice number", "Your invoice date" and upload the invoice clicking on the link in "Your invoice (*.pdf)"
7) put the flag on Yes and click the button "Request payout".