Changed Webcam and Can't get it back

I a using a Google Pixel 2 running Octo4a's back camera.

I tried to switch my webcam to a Usb webcam that I plugged into my Pixel 2, with a completely different IP address. It didn't work, and I have looked at every post on this topic, and none have helped. I just need access to the built in camera on Octo4a. (76.6 KB)