CRS is unavailable or timing out during stated operating hours

Since CRS went live on 30 June 2026 there are widespread reports of the system being unreachable during its stated operating hours, pages hanging, and sessions expiring partway through a lodgement. If you are hitting this: capture a screenshot showing the error and the system clock, note the exact time and filing type, and record any reference number that was generated. That contemporaneous evidence is what you will be asked for later. What specific filing types are failing for you, and has anything reliably worked around it?