LIGHTBURN cannot find my laser device

I have a YOFULY laser recently purchased from Amazon. I built the machine as the instructions said and think I did a good job. I connected it to the computer. Lights came on near the back so I know I had power. I plugged it in and my computer listed “starting up new device”. I then started LIGHTBURN. It said it was searching for the device, but after 5 attempts I realized there was a problem. What am I doing wrong and how do I correct this?

The machine is listed on Amazon as YOFULY-

2-in-1 Upgrade 3018 Pro-M CNC Router Kit, 5500 mW CNC Engraving Machine GRBL Control 3 Axis PCB Milling Machine, Wood Router Engraver with Offline Con

—DAN

Is the offline controller connected? If so, it will not talk to the PC. If it came with stock software, there might be drivers included to get the PC to see it, so you might need to install those.