Once content was successfully activated on the Ubisoft Account you are currently playing the game with, you should be able to locate the content as follows:
Content of the Imperial Pack
At the beginning of a new game session, you can choose to enable alternate skins for the train and the command ship.
Please be advised, the skins cannot be changed once you have started the game session.
Once you reached the 4th citizen tier, the Engineers, you will be able to build a Railway that connects the Oil Refinery with the Small Oil Harbour. The default locomotive will be replaced by the Imperial Train.
The Imperial Command Ship will replace the starting vessel.
You can access the 1602 Memorial via the decoration menu of the Farmers.Season Pass
You will be able to choose the Prisoner avatar when you start a new game.
The company logos Promethean Fire and Eagle Crest can be found on the logo selection screen when you set up a new company.
Content of the Anarchist
The two new ornaments, need to be unlocked in the Ubisoft Club and can be accessed in the Decoration menu.
Content of Botanica