I have a Lumia 1020. Originally it was on Windows Phone 8.1 and I did the Insider Preview to get a preview of Windows 10 Mobile. During that time, I downloaded some apps/games and they worked fine. Some time later, I did a hard reset back to WP8. Then I was able to upgrade it to the most recent version of W10 (not Insider Preview).
Now I can't redownload a couple apps/games from the Windows Store. They are still in My Library, but clicking on them leads me to the "Something happened on our end. Waiting a bit might help" page.
The specific one I really want is "Civilization II". Note, that is not the true Civ 2 or Civ Revolution, but rather a port of Civ 1.