Book purchase on Steam

Hello,

i have a littel question/problem:

I bought a FantasyGround Standard license here and linked my Steam account.

I wanted to buy some books on Steam, but unfortunately Steam doesn't recognize the FantasyGround.
Do you know the problem and do you have a solution for it?

Thanks for your help.

Greetings
Martin

See the information here: https://steamcommunity.com/app/25269...5530621472814/

This doesn't work, i also tried to install the demo version on steam.
If i start this, it has my existing standard license.

But if i do a purchase on steam it say: You need Fantasy Ground first...

How long have you had your FG license? Codes are only sent at intervals to Steam.

Are you trying to add your FG license key to the Steam "CD key" for the FG Classic or FG Unity product on Steam?