I have upgraded my DX UIM hubs to Secure Hub/Robot and I ran into an issue where I could not see any of my hubs.
According to the techdoc-> Troubleshooting Secure Hub and Robot you can solve this problem by deleting the affected profile from the hub/profiles/ folder.
I did this, and now I can see all the hubs, but I cannot communicate with any hubs - they are all red.
Profile sync from other hubs - If you have multiple hubs in your environment, the profiles will be synchronized between them. If you delete the profile from a single hub, it is possible that another hub will replicate the profile back and cause this issue.
To resolve this problem, open a command prompt on the primary hub and navigate to the /Nimsoft/bin/ folder (e.g. /opt/nimsoft/bin in Linux, or C:\Program Files (x86)\Nimsoft\bin\ on Windows)
From here, you can use the probe utility ("pu" or "pu.exe") to delete the profile from the hub - the deletion will then sync to the other hubs instead of the other hubs putting the profile back:
> pu.exe" -u administrator -p <your password> hub "profile_delete" "<profilename>"
So for example to delete the profile for "administrator":
> pu.exe -u administrator -p <password> hub "profile_delete" "administrator"
To delete the profile for "example.user" :
> pu.exe -u administrator -p <password> hub "profile_delete" "example.user"
Once you have done this, you should be able to log in successfully and communicate with the hubs.