Issues with signups have been resolved. The impact was due to an AWS network issue that has since been resolved.
Oct 18, 21:54 UTC
New account signups are currently disabled while we investigate the current connectivity issues. All other components should be functioning as normal.
Oct 18, 21:44 UTC
We are investigating network connectivity issues that may be affecting users in the US-WEST Region. New users will also be unable to currently sign up for an account.
Oct 18, 21:39 UTC