I signed up, filled in my profile, and tried to use the Subscriptions & Membership <Upgrade Now> button.
All I get is a blank screen.
I've tried OSX 10.9 and 10.10, on Safari and on FireFox
The browser isn't hanging on a dead connection. It successfully reads zero bytes. Or at lease if I try to save the page source, I get zero bytes.
I've logged out and in again.
I've even rebooted.
Any help, particularly kicking the server, would be appreciated.