From the Lodestone:
In order to play the Shadowbringers expansion, you must register the code you received alongside your purchase to your FINAL FANTASY XIV service account.
Even if you have registered a pre-order bonus code for early access, you will still need to redeem your full FINAL FANTASY XIV: Shadowbringers registration code or PSN product code to continue playing after the early access period.
Read on for more details.
* Shadowbringers registration codes can be redeemed on Mog Station and PSN starting from Monday, July 1, 2019 at 8:05 a.m. (PDT)
* Please note that if you have a character logged out in a Shadowbringers area after early access has ended on Friday, July 5, 2019 at 11:59 p.m. (local time), you will not be able to log in with that character until you redeem your full Shadowbringers code.
