The ATO's status can be viewed at: https://www.sbr.gov.au/current-sbr-system-status
An additional status page is available here: https://sbr2-status.mybluemix.net/
STP Service Status History
23/02/2023 - From the ATO "SBR2 PROD is currently experiencing issues and is unavailable. We are working to resolve this as a matter of priority and will let you know when the issues have been resolved.
We will provide regular updates on the Unplanned system issues page. The next update will be at 4:30PM."