[mactec54]

If you bought from Banggood then you do not have a UC100. What you have is Chinese fake electronics. Warnings on the UC100 product page: CNCdrive - motion controls
It's the same as if Chinese start to copy the Acorn and sell it under the name Acorn, look like the Acorn. It just has nothing to do with the original controller. If the Acorn will become popular enough then the same will likely happen to it.

There is not chance of that happening with Acorn there software has been developed for 40Years and has been an OEM supplier for more than 20 years if it was going to be copied it would of been long ago