Hi guys. I have a big problem.

Hi guys. I have a big problem. I can’t use my cnc laser because i don’t know connect cnc with software.see video.i try it on 3 PC. Two windows 10 and 1 windows 7. I installed two kind of drivers correctly.seller don’t respond me. I am desperate.thank you if you know helpe.
https://youtu.be/PI-wIXttkBQ

Thank you