Unable to give webcam permission

Since your problem was unrelated to the thread you posted to, I've branched it out so that we can give you more personalized advice.

That said, I need to know more about your configuration, and a more detailed description of the actual problem.  (e.g. Are you seeing a button that you can't click, does authorizing the webcam just not work, etc?)

The following list would give us a decent place to start:

https://forums.adobe.com/thread/1195540