No, it's certainly possible to build a new 2-floors palace. Maybe the interface is not very clear and the semi-transparent image of the new palace is misleading: you should have clicked on the just placed 1st floor and it would have created a 2-floor palace.
Can you see the blue rectangles around the palaces? Those are the palaces where you can add new floors.
Could you please try again next round? (of course you can just try and then reset the action).
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum