If you plan to use the touchscreen to set thickness and work origin, do not use the header. It’s there to fully automate the system, requiring you to input the thickness in your Lightburn project instead of using the built in system.
The 2.0 has built in wifi, what exactly was your aim? Trying to use Lightburn’s wifi connection? That only works with specific machines designed for it. If you’re looking for running programs via wifi with gcode directly from lightburn, you can use my drag/drop files.