Question / Help OBS is capturing my game, but I still have a black screen

[TheMadGamer124]

I'm trying to record a gameplay of this game, Besiege. OBS is capturing the game in the Properties window, but not in the main screen. I'm new to OBS, so if I could get a bit of help, that would be appreciated.

 

[Osiris]

Select the source in OBS and press CTRL+F.