Light burn can't find laser

Hello, I recently purchased the neje 3 pro, I connected to my lap top is a MacBook air with Mac os big sur 11.6.5, I download the light burn but it doesn’t find it, I also tried the neje app but it doesn’t work properly cause it shows me only blanc buttons, is my first time with a machine and I really have not clue what to do

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Hi, we need this info, could you take a video of this?

Hi, I found the problem, the control door was pressed and it didn’t let me to connect. Thanks for your try to help me