NIX Capture Card not displaying video on Streamlabs OBS


I have a Nix Capture card that I am connecting to a windows computer with the USB-A adapter. I know the card is working because the out HDMI cord is projecting my Xbox one game to the TV. However, I am trying to get the game image to show up in StreamLabs OBS. I followed the guide online, and I get the game audio, but all that I get is a black screen for the video.

Please help me get the video of my game to show in StreamLabs OBS.