Why do I have to say if I'm in Europe or the U.S. during the registration process?

LaterPay has two systems: one in the U.S. and one in Europe.

To ensure that you’re receiving the best speed and efficiency, LaterPay has two systems: one based in the U.S. and one in Europe. Furthermore, LaterPay stores data pertaining to U.S. customers and Merchants in the U.S., and data pertaining to EU customers and Merchants is stored in the EU.