Quote Originally Posted by akaneakki View Post
My BF bought the game on steam. He upgraded to HW on non steam, which he bought off at squarenix website. I think you should be fine.
Are you sure? That definitely did not work for me back when that was a thing I was buying and both Steam and SE said if you bought it through Steam, you had to keep going through Steam.

Notice: This product is not compatible with the Steam version of FINAL FANTASY XIV: A Realm Reborn. If you’ve purchased FFXIV: A Realm Reborn on Steam, then you must also purchase FFXIV: Heavensward on Steam to upgrade your existing account.
https://store.na.square-enix.com/pro...rd-pc-download

Note: This expansion content available on Steam may only be registered and added on a Square Enix account that has the base game “FINAL FANTASY XIV: A Realm Reborn” purchased on Steam.
http://store.steampowered.com/app/35...V_Heavensward/

Stormblood says the same thing in both SE and Steam's respective stores.