Log into your account at Roblox and select Gift Cards in the left pane. Click REDEEM CARD at the top right corner. Enter the PIN on your gift card and click Redeem to add the Credit or Robux.
You can redeem your gift card by applying the balance to your account, or by using it during the checkout process. You may run into issues if your code includes a one or a zero; in that case, replace them with the letter "I" or "O," respectively.
But if you have a Roblox gift card, you can use that to pay for the platform's virtual currency, Robux, and take advantage of those extra options. There are two ways to redeem a Roblox gift card: Applying the balance to your account or using it while checking out.