Hi Nick,
I got my problem resolve by a friend. It's just as Jayjay suggested. Go to your pre-set profile under profile manager & click onto the checkout profile. Once it's open, look down towards the lower area & look for the word Returns. You will see a box to check for Accept or Not Accepted. Click onto the one that applies for you. If you accept, then also fill out the larger box with details. Once done, click onto Save. I did all this and it has worked. Best of luck to you and if you need our help again, just ask.