Sorry to hear you are having trouble.
My main PC has a two monitor set up (4k main, 2k secondary). My secondary pc has two dummy emulators that produce the same resolutions. But when I connect to the second PC I can't find an option to show both monitors.
Cant find the option to view both - one at a time (that does exist) or both at the same time?
The latter does not exist yet but is being considered.
Stardock Support Manager