Thank you for the many Answers.
This OLED work with Crystalfonts Lib (according to manufacturer information with RS0010 / WS0010 Driver):
Not working this OLED- should be with WS0012:
[https://www.winstar.com.tw/de/products/oled-module/oled-character-display/weo001602b.html]
Datasheet:
RS0012(1).pdf (2.3 MB)
Does anyone have still an idea ?
Thanks