I found this from what looks like an official WU rep, hope they fix it soon!
"API not working
PROBLEM UPDATED 25 MINUTES AGO
There is a webserver problem with our data in cloud hosting provider. They shut down all of the instances and they are not coming back up correctly. We have all hands on deck and are working through the problems as quickly as possible. Please bear with us as we work to fix this.
Brendan Hayes, Official Rep
945 Posts 111 Reply Likes
Posted 19 hours ago"