A bit more cumbersome
Starting on February 13th, 2024, there will be a change to how Trainers using Android devices redeem offer codes in Pokémon GO.
After this date, Android devices will be unable to redeem offer codes within the app—instead, all users can redeem their offers via the Pokémon GO Web Store. Trainers with Pokémon Trainer Club (PTC) accounts can redeem offers by linking their Pokémon GO account to another login provider, which they can use to log in to the web store.
Niantic says they’re hoping this will be an easy transition for Trainers and will provide a one-stop shop for everyone. If you have any additional questions about the offer code redemption process, make sure to visit the Niantic Help Center for more information.