Genmitsu 3020 Offline Controller Problem

Genmitsu 3020 Pro Max V2

It came with no instructions for the offline controller. I ran a simple file with a .nc suffix from the pc using Candle and it worked fine.

With the offline controller I can’t get it to work. When I click ‘start project’ it says there are no files on the sd card. The sd card is clicked into the slot in the offline controller and has .nc files on it.

Saintsmart sent me a new offline controller. It gets the same results. Saintsmart ignores me when I ask for instructions for the offline controller.

Not sure if I’m doing something wrong. Or I just need instructions. Any ideas?