Agent not reporting to SDP

Agent not reporting to SDP

I have several workstations with the agent installed and I have verified it thru the control panel as well as looking it up in SDP under the workstations and selecting software.  However, they are not showing up when I click on the workstations with  Agent Installed link.  

Scans have been successful each day and the latest agent is installed (1.0.18) on a few of the workstations.

Lastly, could I do an inventory of all software without the agent?  
                New to ADManager Plus?

                  New to ADSelfService Plus?