If you started a Play Dead subscription first, you'll need to cancel your subscription, wait for it to end, then add-on Play Dead through your nugs subscription to get the discounted rate. Your new bundle subscription and the add-on savings will be applied at your next renewal. 

If you're a nugs subscriber and started a Play Dead promotion, be sure to cancel that promo subscription before it renews at full price. You can always add Play Dead to your nugs subscription, using the same email address, and keep your library, playlists, and more under one account.