Slitherine

I purchased many of the updates for the game yesterday as well as the free version of the basic game. The mods all came with Keys, the free version did not and is requiring a key to install. While all the mods show under My Games, the free version does not. Please correct. Thanks.

steam or site version?

When asked to insert the serial number, please click in the drop down menu "Select a New Product to Install... " and select a DLC which you have purchased
Type DLC serial number.
Click in the button "Check Serial".
Do the same for all your other expansions.
Then you'll be able to proceed and install the game.