1. Select Social button
2. Select Shift Code button
3. Click Link Account button, it will show up 7 serial number code link
4. Open the web site show as below: https://shift.gearboxsoftware.com/ttwl, Click Creat New Account
5. After sign in, in put 7 serial number code. And the click Activitie Link Code button.
6. Link account successful.
7. Log in to game and click Go Online.
8. You can click Update to set your Display Name
9. When doing trading, we will add your Display Name as friend. And invite you join game and start trading. All platform will be through this method to trade.