3.5 Kedei Touchscreen not working

I can’t get my 3.5 Kedei Touchscreen to work on my Raspberry Pi 3 modell B, Volumio 2.323
Plug in is activated and works with HDMI Display but not with the touchscreen. Only blank white screen visible.

When I boot with a Raspian SD-Card, everything works fine.

Any Ideas?

No one that has a solution?