The Nimsoft service controller does not show robot name, version, hub and domain.
You can see all the robot.cfg has the right information but no way to make the robot to populate the information on the controller.
Robot might be reporting to a hub that had major changes like migration from one virtual machine to another with the same ip address and same hostname.
Removed the old robot.cfg and set a new robot.cfg with the minimum configuration like below
<controller>
domain = <domain>
hubip = ##.##.#.#
first_probe_port = 48000
hub = <hub>
hubrobotname = <hubname>
hubport = 48002
access_0 = 0
access_1 = 1
access_2 = 2
access_3 = 3
access_4 = 4
</controller>