Streamlabs not capturing

[Hawk Tuah]

I'm trying to stream Jackbox to Twitch using Streamlabs OBS. But I am completely unable to capture the game as a source in Streamlabs. I've also had this problem with Drawful, but in that instance I was able to work around it by using Window Capture. However for Jackbox neither Game Capture nor Window Capture are picking up Jackbox.

I would love to stream this game. Plz help!

[SlowpokeGang]

Same problem right here, tried many things but doesn't work.