[Resolved]  The Souled Store — t shirt

I had ordered two t shirts out of which one i have to exchange for different size but i can't find the return /exchange option in view and edit part of my order section. I can find no such option on the screen. I tried to click on the product i want to exchange for different size but nothing is opening, on that page only the invoice receipt is active. Plase resolve this issue it's urgent.