I recently updated my Lumia 640 XL to WP 10 and updated some of the games to their Win 10 versions. After getting the "The Renaissance" achievement, I went back to my old phone (a Nokia Lumia 635) which is still running WP 8.1 so that I could load that version of the game so the achievement could pop there, too. However, the game no longer appears on that phone and when I attempt to install it again from the store, the game shows as installed and won't let me choose to install it again on that device. I removed it from the WP 10 phone but that didn't help. How can I reinstall the game on the WP 8.1 phone? Is it possible without completely resetting the phone; I don't want to do that and find that I've lost all progress in the games on that phone only to have Age of Empires: Castle Siege give me the same issue.
You only have one castle seige on your xbox page that i can see. Each game here shows achievements but gamerscore doesnt increase on each platform. If you see more than one on your xbox page send over a screenshot as very intrigued to how its doing it for you