I'm not using wifi to download it. If I were to turn on wifi the download bar would disappear about the same time the phone connected to my network. I'll try opening the game with just wifi on instead of cellular data, see if that changes things.
It is completely downloaded. I've tried restarting the app and it always starts out downloading that level again. It speed through to 50%, hangs for a second or two, zooms to 100% then disappears. I try to open the level and nothing happens.