First, take a deep breath. These are actually pretty simple machines and there are only a few things that can go wrong.
Next, give us some details to help figure it out. Tell us what you have tried so far, machine details, photos, etc. Tell us how you think it is supposed to work (0-10V? PWM? On/Off) How is your spindle wired up?
In general, take a systematic approach. Can you control the spindle independently of the CNC controller? Check the wiring for errors/loose connections/etc. Is everything getting power? Check twice. Then tell us what and how you checked.
As an aside, when buying a Chinese CNC machine, you should expect to be doing this kind of debugging, they are generally pretty short on customer support.
Next, give us some details to help figure it out. Tell us what you have tried so far, machine details, photos, etc. Tell us how you think it is supposed to work (0-10V? PWM? On/Off) How is your spindle wired up?
In general, take a systematic approach. Can you control the spindle independently of the CNC controller? Check the wiring for errors/loose connections/etc. Is everything getting power? Check twice. Then tell us what and how you checked.
As an aside, when buying a Chinese CNC machine, you should expect to be doing this kind of debugging, they are generally pretty short on customer support.