Huanyang Inverter used with Shark 2 HP Spindle

Hello
I have a Shark 520 and just recently installed the 2HP Spindle kit with the Huanyang Inverter. I have used this setup to do a few small projects and seems to be working just fine. The issue I am having is when I am finished with a project and turn off the control box the Inverter does not shut off !!!
I tried using the power button of the inverter and that does nothing, the only way I can power it off is to unplug it.

Also I have been reading some of the posts concerning the Huanyang Inverter and see several posts about programing the inverter.
I am using Vectric Desktop Software with the Ready to Control on my Laptop. Am I correct in assuming that it is controlling all the toolpath RPM Specs when I load it on the Ready to Control software?

Thanks in advance for your help