Interesting... What site? What happens with the camera app in windows? Try these sites. https://zoom.us/test https://webcammictest.com/

Laptop, desktop, or DIY? If not DIY, what make and model computer?

My mic and camera work on windows and apps, it even works on zoom. This specific website is a new website, that's kind of like an online school the other website that doesn't do it, is an age verification site?

Hi

Have you granted that site permission to access your microphone and camera?

This support article may help:

https://support.mozilla.org/en-US/kb/how-manage-your-camera-and-microphone-permissions

I did, I manually granted it permission neither worked

Post a similar screenshot from the mystery site. Can we replicate your steps? If not, then it's a wrap for me.

that's the issue, that pop up doesn't show