Ok and did you install the game fully before you attempted to redeem your codes or how did you do it? On your PS4, go to the main menu, scroll ALL THE WAY TO THE RIGHT, to LIBRARY and go into it Find Destiny in your library, click on it Go down the the PLAYSTATION STORE section on the left hand side of the screen then scroll to the right to VIEW YOUR ADD ONS This will tell you what add-ons you have redeemed on this account. If The Rise of Iron, HoW, TDB, TTK are not there, then you either did not redeem your codes properly or you purchased a pre-owned game where the codes were already redeemed.

Nah I haven't even installed destiny yet. Guess I'll do that lmao