Here's how to top up or load your Garena account in-game:
1. Log in your Garena Messenger and launch the League of Legends.
2. Go to the "Shop".
3. Click on the "Purchase RP".
4. You will be asked for your Garena Username and password.
(Please take note that you can log in different accounts in-game so make sure to log in the correct one if you have multiple accounts.)
Click the "Login" button to continue.
5. A new page will be shown wherein you can view your total Shell Balance.
You can choose on how much Garena Shells you want to convert
6. Click on "Top up Garena Shells".
7. You will be directed to the Garena page.
Type in the Card Number and the Card Password
The Card Code and the Card Password are alphanumeric and CASE SENSITIVE.
8. Click on the "Redeem Now" button after.
9. You will be informed if your transaction is successful.