DroboApps share not mounts

I’m trying to install DroboApps. have latest 2.1.2 FW and DroboDashboard. enabled the DroboApps in the dashboard. Rebooted. and ticked the mount point for the droboapps share in the drobo dashboard. it reports all is OK and connected (to X: drive letter).
However: I can’t see this X mapping. not in windows explorer and not in net use. Also trying to mount it by hand doesn’t work. Not with my username and not with Admin username. same password.

Any suggestions ?