Not to worry, let's get them sorted out as quickly as possible so you don't miss any of the the event highlights
All being well you should've been prompted to select your audio and video device on your machine to enable people to hear and see you at the event, but if you are unable to select your AV options, it is probably because you need to give browser permissions for Hopin to access your AV devices.
To give browser permissions in the Chrome browser a shortcut is in the URL bar, find the video camera icon and click it. A drop-down modal will appear like this on the right, if not you will need to manually find the settings, guide below.
Make sure your camera and microphone are allowed for https://hopin.to.
You can also check to see if Hopin has access to your AV devices this way: In your browser, click Chrome
copy this link into the search bar : chrome://settings/content