You should not use Windows Audio for the Audio device type. You should use ASIO instead. Now, if your soundcard doesn't come with ASIO drivers, you should install ASIO4ALL.
Once you select ASIO, you no longer have output and input, but you'll have Device. There you pick your soundcard (or ASIO4ALL), and then your inputs and outputs should be detected and configured automatically (I think? Don't remember having to do anything there).
In other contexts, at least in Waveform 11, that eye icon manages visibility of main view components (i.e., whether the Marker, Arranger, Chord tracks, Mixer, on-screen keyboard, etc. are seen). Maybe it’s similar in your plugin? I know Waves plugins are supposed to be “modular” (in that one is meant to be able to use discrete components of the virtual processors separately; I’ve yet to do so); perhaps this is similar? Does your plugin’s documentation say anything about different views or modular usage?
As for the camera snapshots, that’s apparently for taking a thumbnail to use in the “Visual Plugin selector”, according to page 291 (311 in the PDF) of the manual: https://www.tracktion.com/wp/wp-content/uploads/2019/05/waveform-user-guide-v5.pdf