Camera & Microphone Permissions for Chrome

On Chrome, you can reset permissions using a dialog on the left side of the address bar. Click on the camera icon as shown below.

You'll see that the camera and mic are both blocked/disabled.

Click the sliders to enable both camera and microphone permissions. Then close the dialogue using the cross at the top.

Your browser will ask you to reload the page. Once you've done that, you should be able to log in to your POPUP experience.