You have to redeem the first access code for the first 12-month DataCamp Premium Plan. After the first 12-month DataCamp Premium Plan has expired, you can redeem the second code. Please note the Datacamp access code is valid for redemption until 31 Oct 2024.
You may also view this FAQ for more info: I HAVE AN EXISTING DATACAMP PREMIUM PLAN SUBSCRIPTION, HOW DO I REDEEM MY 12-MONTH DATACAMP PREMIUM PLAN ACCESS CODE?
