So I am having a problem with Estlcam connecting to my printer. I go into setup, USB cnc connection, I select the port, select the GRBL SAFE pin layout, and click program arduino. The message and the bottom says “Activating Bootloader: Failed” and then Estlcam crashes. Ive reinstalled the program 3 times and its always the same issue. Should I not be using the GRBL SAFE pin layout?