The donation page seems to be down. I've tried clearing history/cookies/cache and restarting browser, so I'm assuming it's actually down from the server's end. Is this a planned maintenance? When is it supposed to be up again?
It's a few hours later now, but it appears to be working for me. I did not go through the whole process of making a donation, but the initial donation slip page comes up, and the history, statements, and settings pages all display. The help video even plays.
This morning U.K. time the donations web page came up with a Down for Maintenance message. That might have been the reason for the problems. Operation is now back to normal for me.