It seems that Video Device In/Out TOP does not work properly with the latest blackmagic driver (Desktop Video 11.0).
In DeckLink Quad2, Although the device menu shows 8 ports, but they can not be selected properly.
Please update to use the latest blackmagic driver in the next release.
OS: Window10 64bit
Video Capture: Blackmagic DeckLink Quad2
Driver: Desktop Video 11.0