Aliexpress OLED 16x02 not working/WS0012

I have modified the CrystalFonts Datei:
WS0012.ino (13.2 KB)
According the Datasheet is this die Initialization (Sheet 31):


I have connected the Display im 8 Bit Mode.
But, the Display not working- stay black.
Anny Ideas ?

Thanks