We now have reason to believe that this is an issue caused by the Google API. We are in contact with Google trying to resolve, we'll update you here as soon as we know more. The web servers remain available and for the most part stable. This is currently affecting a subset of users who are signing up for new accounts with Google.
If you have any specific errors you've seen please open a support request and report them to us (http://support.chalkup.co/hc/en-us/requests/new
). Thank you.