Update 3: And we're back! We're closely monitoring the situation and will continue to investigate the root cause. Thanks for your understanding!
Update 2: Full functionality is slowly coming back online. Thanks for your patience!
Update: We're seeing an increasing number of successful logins.
We're currently investigating an issue with users being unable to log in. This appears to be related server issues on our end, and we'll update this post with more information. Thanks for your patience!