Brand new user and having problems

I just bought my first laser, a Creality Falcon Pro 10w. I assembled the laser and installed Lightburn. When I open Lightburn, the laser goes to the home corner, but I get a window with an error message. I have no idea what it means, other than that it appears to be a problem with the laser going home, or how to fix it. Nor can I close the window to set up my camera.

First turn off auto homing and then find out if you have homing switches and what corner there in.
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Thanks for the reply. I can’t get the window to move or close to do

Exit out of Lightburn restart and go to windows> reset to default.