Only thing you can really do is close the app and re-enter right away, like within 30 seconds. Sometimes this will allow you to continue along solo, sometimes it doesn't.
Email customer support (members@worldgolftour.com) or use the Contact link over at the side of this page and explain what happened. You'll get refunded your entry fee, but you are out of luck for the ball hits used up to that point and any potential winnings you might've received if you had advanced to final round.