New user question - how to see my 2.4 GHz network

The default version showed my 2.4 GHz network.
The MetaGeek Plus version is not showing it.
How do I monitor the traffic on that network?

It showed up - on its own; I did not change anything.
Then I was able to initiate a packet capture.
Wondering why it did not show up earlier, with the same multiple devices connected.