Hi, Justin Morrow
I’m sorry Nintendo sent you back and forth on this. You entered the code in the right place: the official instructions for a physical copy say to redeem its bonus code through Nintendo, then sign in to your Microsoft account in Minecraft Dungeons II to claim the pre-order items.
First, make sure you’re playing under the same Nintendo user that redeemed the code. Redeemed content belongs to that user’s Nintendo Account, and an in-game bonus won’t appear as a separate icon on the Switch HOME Menu. Then open the game, sign in to your Microsoft account, and check the Collectibles tab for the Twisted Cape, Twisted Chicken pet, and hero skins.
If they’re still missing, use Contact Support at the bottom of a Minecraft Help article. Include your purchase receipt, Nintendo’s redemption confirmation, the Nintendo user and Microsoft account you used, and screenshots of the Collectibles tab. Don’t post the full code or account details publicly. Forum staff can’t add the items to your account, but Minecraft support can review the missing reward.