I thank you for the answer. I believe that lightburn and my card via usb have communication problems or that as another user in my configuration we have problems using the TFT lcd display at the same time
i have to try to unplug lcd and see if there are still problems.
my main goal is to use lightburn for offline work with the SD card, otherwise it would not be useful for me because I have to take the projects to the laboratory where there are machines that make dust and it would not be wise to put a laptop.
could you help me with the frame issue which is totally wrong with the actual engraving size? thank you good day