IP's found but not populating Network Atlas

I downloaded the Free IPAM and installed it. I ran the Discovery and found my media (16 nodes). I get the error "Your maximum number of licensed elements cannot be determined." I can not import these nodes to Network Atlas. What limitations are there for the free IPAM? Am I missing a process during the installation or is the limitation the fact you can't do anything with the gathered data? Is there an activation that comes with this app as well?