We’re back after 36 hours offline. Unfortunately, the host turned off the old server before the DNS records were updated on the new server, and before the record was updated at the registrar. A frustrating series of miscommunications resulted in the toposim.net domain being unknown to the DNS servers worldwide since early yesterday morning.
But we finally got it all sorted out and things appear to be running normally, finally. Please report any errors or anomalies with the web site so we might make any necessary final adjustments to complete the migration.