Hi,
Ideally you should be finding them in your hub, this looks strange.
Have you tried if catalog contains services you have registered on hub? If your catalog has services in it, you can ensure that nothing is wrong. If it does not have the services, may be you can try re-registering them again.
Also, if you have more than one backend servers registered with your hub, there are chances that you might not be selecting right system when trying to check services registered.
Br,
Nadh