Good you can connect it. Device Managaer do not use any logins. onvif is only used for discovery in NCS at this time. To use PTZ in NCS it must be a template since PTZ use other ports and http. The PTZ commands are also a trick to find. We have discussed to also use the PTZ information in the onvif, but we are not there yet.
By the way, can you write the URL here so the next user can use that.