Z-wave topology map all red

I picked up a Zooz z-stick on sale last week. It connected OK as a secondary controller (using S2, after several tries where that failed); using PC Z-wave Controller, I can see all the nodes on the network, but when I load up the topology map, the entire table is red. My network is running fine so obviously my devices are actually talking to each other without an issue. Is there a step I missed somewhere besides hitting “reload” on the map?