Regarding whether the game will block players from some regions by IP address: currently, there is no plan to block players from the game by regional IP blocking. Playing on servers physically distant from your location might mean you experience some issues with latency, but at this time we don’t plan on blocking players from a region by IP. On a similar note, anyone who pre-orders the game (and redeems their code) would receive the early access that is part of that pre-order.
We are continuing to investigate payment methods (specifically regarding credit cards billing addresses), and should have a definitive answer on the topic very soon.
I know you’ve probably seen this link a ton already, but please make sure to consult the pre-order FAQ if you have any questions related to pre-order (aside from these that we’re investigating). We really appreciate your patience as we get more information for you.”