In-game: Open the game and go to Settings → Find the “Redeem Code” / “Redemption Code” option (usually under Account) → Enter the code exactly as written → Confirm — rewards usually arrive in your in-game mail. General steps — check the game's official site for the exact method.
Why isn't my AFK Arena: Companions code working?
Usually because the code has expired, you've already redeemed it, or there's a typo when entering it.
How often are AFK Arena: Companions codes updated on KodeGG?
Automatically every hour from official and trusted sources. Expired codes aren't deleted — they're archived into a database.