Pivotal Support received reports from a number of customers who were unable to complete the sign up process. In each case, the users were able login to their accounts but were presented with an error page after accepting the Terms of Service.
After investigating, we determined that the billing and account management console had exceeded a database usage quota. The issue was resolved by increasing the quota. There is follow up work in progress to improve proactive alerting on the billing and account management database and avoid this issue in the future.