Agents or Clients may not be reporting/connecting to the correct Site Server.
In the Symantec Management Console: Settings > Notification Server > Site Server Settings.
On the left hand side, drill down under Site Servers to the Site server you wish to be host.
Expand the menu under this server, click Manually Assigned Agents.
There are many pre-built “targets”, but you can also create a new target based on desired criteria.