After updating or reinstalling, you may have new assets to download to your game. While these are downloading, things like the buildings in your keep may not display and the combat map will be unavailable.
Depending on your internet connection and the size of the download, this can take up to a few minutes to load the first time you launch the game after updating.
Please make sure you are connected to a strong, secure wifi connection (rather than a data plan) and let the game sit open for a few minutes to finish downloading the new content.
Note: If you close and restart the game before this download is complete, you will need to restart the download from the beginning next time you open the game.
If you are still experiencing difficulty with this issue after following the suggestion above, please submit a help request at go.wbgames.com/HBOhelp or via the "Submit Ticket" button under the Customer Service menu in-game and a Customer Support Agent would be happy to assist you further.