Basically, the title says it all.
Yesterday I bought the game (the Walking Dead) from the US Appstore (iOS version, obviously) and I really wanted to buy all the episodes at once yet whenever I try to do so it gives me this
"Unable to complete purchase: a network error occurred."
I have been trying for a whole day by now, both on my iPad and on my iPod.
Also, I am using pre-paid cards, not a credit card but that should not be a problem, right?
Please help me.