@Mikejl not too sure how you did this without a touch screen? maybe you have it now.
regarding the enclosure - congratulations (YAY), i found the enclosure excellent (it was better than i hoped and really good quality).
i had the same problem when i got the enclosure, but at least you worked out it was the machine software (took me a while to work out), just update the firmware on the machine via a usb (after update you will be able to do it via the touchscreen) the usb must be fat32
go to the bottom of the thread and it will tell you how to update.
for me (before i updated) wouldn’t let me print because it said the door was open, lights and fan didn’t work. (after update) works perfectly.
Hint (for mikejl) i connect the computer to the snapmaker via wifi, the top of the top four left buttons, press refresh (assuming the snapmaker is on and you are on the same wifi) press connect and verify on the touch screen
you will now be able to send the gcode to the machine via wifi