You need to fix this issue. I'm trying to download episode 2 of The Walking Dead for some days now, on my iPad2 and I'm not even downloading at 0.01% per second. It's definitely not my end of the internet connection (lots of capacity left).
This, for me, is a reason I will go to a random torrent site and pirate this game on another platform than iOS.
I'm even tempted to say the lack of support and download speed justifies me pirating it. Torrents download at maximum speed, without any problems. If you don't fix these kinds of issues, or give information on them, people will understandably turn to illegal downloading.
Get your act together. People that spend money on your games deserve support and quick and easy downloads.