ESP32-POE-ISO-WROVER rev L + MOD-LCD2.8RTO rev D not working

[daybreak]

ESP32-POE-ISO-WROVER rev L + MOD-LCD2.8RTO rev D the Display only shows backlight LED. I could not activate the display with text. I have tried a lot of variants in the code. Are there any special things to make it work?

the uext gpio set up is:
| UEXT-Pin | Signal | ESP32-GPIO | Funktion |
|----------|--------|------------|----------|
| 1 | 3.3V | 3.3V | Stromversorgung |
| 2 | GND | GND | Masse |
| 7 | **MISO** | **GPIO19** | **D/C (als Output!)** |
| 8 | MOSI | GPIO23 | SPI MOSI |
| 9 | CLK | GPIO18 | SPI CLK |
| 10 | SSEL | GPIO5 | SPI CS |

[LubOlimex]

Try with this code (download the whole repo):

https://github.com/OLIMEX/MOD-LCD2.8RTP/tree/master/SOFTWARE/Arduino/graphicstest_olimex_NS2009

Make sure PSRAM is enabled in your board selection options (this is specific for WROVER boards).