Sound not coming out from speaker when using OBS to play PS5

Hello, I'm using OBS so I can use my PC monitor while I'm playing my PS5. The problem is I cannot hear any sound from my speaker. This wasn't a problem this morning, but I think something changed after I ran KpRm software. One of its tasks is to reset all settings back to the original. I had some issues with Trojan and was making sure there weren't any problems (I ran Windows Defender and Malwarebytes too).
I checked the permission and OBS still has access to the audio. It's not my speaker since I can hear audio from YouTube just fine. I checked my PS5 and the audio is indeed being channeled to the video capture card. I'm using an external speaker.
Can somebody help me?