I contacted technical support by chat this morning. It took so long to get a chat operator, I called in. Phone support confirmed they were aware of the problem. They recommended that I try back again "in a few hours". Just as the phone call ended, a chat operator finally connected. He confirmed that they were aware of the problem, but he couldn't send any direct links through chat, and he couldn't offer any alternatives either.
I don't understand why fixing broken downloads could take hours. It's probably the same reason support is so slow.
I am sorry for the inconvenience.
It seems to be working now.