AusMap Layers no longer linked

AusMap layers no longer loading on QGIS.  All projects that previously had AusMap layers successfully working are now opening without links to AusMaps. Efforts to automatically find are unsuccessful.

QGIS version 3.34.7-Prizren. Using Windows 11 - but pretty sure I was when projects were originally created.

Any suggestions on best way to try and rectify?  Many thanks!