I now restored a 1 month old backup to another usb stick. Same problem there, too?!? How can that be?
The Companion app finds it at least (shows fanspeed, cpu, array sopped, parity valid,...).
EDIT:
The last 3 backups within 2 month have the same problem. I restored them via Unraid.USB.Creator.Win32-1.6 to a new usb stick but the gui (server and from main pc) istn´t accessible.
So i made a whole new stick with Unraid.USB.Creator.Win32-1.6. That works. But of course all my settings, apps, are gone.
Has anybody an idea? Otherwise I have to build the new one.