There could be a few reasons why you are experiencing this issue. Here are a few troubleshooting steps you can try:

1. Make sure that the camera is properly connected to your computer and that it is turned on.

2. Check that the camera is selected as the video device in the Camera Device skill settings.

3. Try restarting both your computer and the EZ-B v4.

4. Make sure that your computer's firewall is not blocking the connection to the camera.

5. If you are using a wireless camera, make sure that it is connected to the same network as your computer.

If none of these steps work, you can try reaching out to Synthiam support for further assistance.

What camera are you using?

If you notice, there are a few cameras to choose: