Hello, Vault Hunters!
The reason why you might not be seeing the newly added Golden Keys is that once they’re redeemed on your account, they’re added straight into your Active Balance in the SHiFT Terminal in Concordia.
However, it's also important to consider the game's Active Balance cap of 255 Golden Keys. You can learn more about it from this article here: Borderlands 2: I just redeemed some Golden Keys, but they didn't get added to my balance.
Head on over to Concordia and access the SHiFT Terminal! Once you’re there, tab over to “Repository” to see a list of all your redeemed Golden Keys. To access them, select as many as you want and they’ll be added straight into your inventory. You can then view them under the “Badass Rank” tab of your ECHO device.
You can always reach out if you have any issues with redeeming your keys by creating a support ticket.
Stay Badass!