Problem solved thanks to Kevin. He answered via the official support ticket system.
For those interested, my problem was that I cloned SD cards between Raspberries and on the clone remained some files that identified each machine. Even if you uninstall neorouter those files may remain there. The important one is Client.xml
The solution is to stop nrclientcmd:
Code:
sudo killall nrservice
and delete it:
Code:
rm /usr/local/ZebraNetworkSystems/NeoRouter/Client.xml
then reboot and log back in to nrclientcmd.
Thanks again Kevin.