PayPal Express is not currently visible on the Billing Page. If you wish to use this payment method, you can get to it by going to the EN/USD page, and choosing credit card. Once it passes to PayPal, you can change from credit card to PayPal Express.
We apologize for this convienance, and will get this resolved as soon as possible.
P.S. PayPal Recurring is also not visible at this time, and the workaround for that is a bit more complicated. However, we should have this fixed soon, so no worries.