Ikier k1 ultra lasergraveermachine probleem

Hi.
I recently acquired the Ikier K1 Ultra.
Now I am new to the world of laser engraving and purchased this based on the reviews on YouTube.
Only I have a problem.
From day 1 the autofocus does not work and when I use the home button in lightburn, the autofocus goes up and not the laser goes to the home position at the front left.
Have set the machine as prescribed in the instructions for use.
Anyone have an idea what’s going wrong here?
Thank you in advance.
Gr Michel

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