I just found out, when installing a zwave motion sensor "ZIR000" in snapshot #23165, using Sarah, two "Generic Sensors" get created one under (Zwave=>Zwave embedded security interf) which is OK, and a second one under (Core) which is not OK, and causing after reload to get "Orbiter cannot register with the router. Please try again later", I attached a snapshot that depict what I just mentioned.
Solution:
Delete the sensor under the Core and regenerate the oribiter and reload the router, everything is ok at this point.
P.S> I installed this zWave setup many times in the past no issues found, this is the first time I see this.