As of Approx 11:15 AM PST ShipCompliant’s services went down.
You can follow their status updates here: http://status.shipcompliant.com/
If you are a ShipCompliant client this means that orders placed during this downtime will use your State Profile tax rates. This also means that you may encounter the error page when trying to check compliance on orders. Any orders placed during the outage will need to be resubmitted to ShipCompliant when their services are back online.
We have reached out to ShipCompliant but we are currently not aware of and ETA for when the services will be back up.