First of all, you're not using a CTE display. Check your pinouts to make sure they are compatible.
Next: if the display is compatible, use the CTE70 display not a CTE50.
The numbers after the display coincide with the SPI port. Double check these to make sure they are correct.
Finally, make sure that your touchscreen pens are in the same place as on the CTE board.
Any discrepancy can cause problems.
Make sure that you set up the calibration screen correctly with the proper CTE screen size.
Hope this helps.
Sam.