Thanks for the effort but could you pass on a little more information? As;
Did you have to change/modify any of the library files?
Are you using the Waveshare board or another 7789 board?
What is your wiring setup? Is it like the one I posted?
Can you include your test sketch. Are there changes from the one I posted?
By the way, the link to the other post I reference above is;
Not sure how it got shortened to the general forum address.