Do you have bprd log on the master server?
This will show us initial job setup and tell us if NBU believes that the restore should go somewhere else.
Look for 'restorefiles' entries for this particular restore attempt.
If bprd log folder does not exist, create it and restart NBU.
Retry the restore.
Locate the restorefiles entries and post here.
Good idea if you also tell us which process you followed to perform the restore.