The identical situation was mentioned in a different thread that has been closed without a resolution being shown.
I have a Shapeoko 5 Pro with VFD spindle and have done many products on my rig. Yesterday, the spindle threw me the middle finger and stopped working. Im able to jog it from the spindle controller but not from carbide motion MDI console. I suspect the communication between those 2 devices has been lost. Ive tried everything; disconnecting everything, resetting multiple times, reloading software, re-initilizing multiple times and many other troubleshooting techiques. Ive had the machine for 1 1/2 months now, so shouldn’t be an issue of wear and tear. I am not sure what else to look into.