help getting mcufriend tftp display to work

Copy-Paste the diagnosis from the Serial Terminal.

If the diagnostic says broken screen, it is probably correct. You can always measure the Touch Panel resistance with a DMM.

If the glass has a single crack, it is broken.
If there is a broken connection between the Touch panel signals and the Shield pins, it is broken.

Note that the diagnostic does not work on ARM or ESP32. You must use a DMM.

David.