My friend originally bought this game on the PS3 and wanted to it launch on the PC. They purchased this game through steam and -- I think -- I don't know what the activation process looks like-- skipped the activation process and logged in with their already existing account. They said they had no use for the steam key and gave it to me. So I downloaded the client from the SE's website, and activated my account with that key, outside of steam.

Here is my problem:

This message on the Heavensward page on Steam concerns me: " This content requires the base game FINAL FANTASY® XIV: A Realm Reborn™ on Steam in order to play. "

Does this mean I have to have the game in my library in order to download Heavensward?

I don't have this game in my library, and my account is recognized by the developer's servers as a steam account. And if the above is true, I don't think I can get the expansion.

How can I fix this? Would purchasing the game on my steam account work?