CNC Problem Bit starting too high

I’m working with my first cnc project. I have my file made in fusion 360. All looks good was able to export it and load up to snapmaker2

I set the origin of the cnc bit did the boundry etc. then pressed start.

problem is it goes to the starting location spins but is about 5mm above the material to be cut. This is after I set the z origin with the paper several times. Anyone know why my bit is starting high?

please help

You have an incorrect setting in Fusion.
3 places this usually happens:
Setup - stock size is wrong
Setup - work origin is selected incorrectly
Toolpath - heights set incorrectly