Stream Elements Alert has no audio.... send help!

[GwenArt]

I inserted the browser link source from the alert url from StreamElements. After I inserted it, I tried to test it. I can hear and see the alert but the viewer can't hear the audio at all. Also worse, there's no checkbox icon for enabling 'monitor sound on OBS' on the browser source OBS setting. What should I do to solve this? I'm really stuck at this point.

(I'm using Macbook Rose Gold & iMac atm)

 

[itst]

You will need to get system sound into your scene. See https://obsproject.com/kb/macos-desktop-audio-capture-guide