How do I fix "You are not entitled to the additional content" on PlayStation?

Error CE-33678-7 means PlayStation can't verify your right to access DLC or add-on content. The most common fix is to restore your licenses: on PS5 go to Settings → Users and Accounts → Other → Restore Licenses; on PS4 go to Settings → Account Management → Restore Licenses. Restart your console after. If that doesn't help, check that your console is set as Primary (PS5: Console Sharing and Offline Play → Enable; PS4: Activate as Your Primary PS4), that the DLC region matches your game region, that your PS Plus subscription is active if the content was claimed through PS Plus, and that you're signed into the correct PSN account.