If you already have a Guild Wars 2 account and would like to upgrade it, you must apply a serial code to the account.
To apply the code, simply follow these steps:
- Go to https://account.arena.net/login and log in to your account.
- Click “REDEEM A CODE" and enter your serial code in the box provided.
- Click “SUBMIT” and you’re done!
- Log in to Guild wars 2.
- Open the Black Lion Trading Company dashboard (Or type "O" in game , by default).
- Select "Redeem Code" on the upper left of the gem store
- Follow the on-screen instructions to redeem your code. The gems are delivered automatically when the code is redeemed successfully.