Apologies for the delayed response, we’re currently moving the company and things have been hectic.
A lot of additional information would be a good place to start, if you would: How To Ask For Help
As you gather that information, we also suggest the following as a good document worth review to ensure you have set things up correctly. Common Grbl Setups - LightBurn Software Documentation
Keep walking through until completion of the Simple Project section to get a fuller understanding of the LightBurn basics.