With the latest versions of GeoGebra, stylus tracking does not work.
zSpace is only supported in GeoGebra using version 5.x of the application. The latest releases of GeoGebra 5.x, tracking may work intermittently or may not work at all. Because GeoGebra automatically updates to the newest 5.x version, GeoGebra cannot be used at the moment.
We are working directly with GeoGebra to resolve this issue as soon as possible and will post updates here as they become available.