@MojangSupport I'm having a problem collecting the Swamp Dwellers bundle perk. I was able to get the bundle, it shows up in my manage game add-ons section, but the content isn't accessible in game. It also only gives me the option to buy the perk even though I claimed it.

That sounds really frustrating. Sometimes it takes a moment for the content to sync with the account. Have you tried logging completely out and back in again? ^AC

Yes, and i reinstalled Minecraft completely. I noticed other users on xbox were sharing similar frustration in the reviews for this add-on.