Welcome,
I had a similar problem with another engraver.
I did manage to get an image with it.
Have a look at the camera lens to see if it’s got a protective film on it from the factory. I was supposed to remove it - it wasn’t in the instructions.
Please do take a moment to fill out your Profile.
Having the equipment listed, which engraver you’re working with and what kind of computer you’re using, helps us immensely when it comes to answering questions.
Feel free to take pictures and screenshots and share them here when an obstacle gets in your way. https://www.take-a-screenshot.org/
This may also be of help to get started: