Question about Haier Hwd80-b14979-s

I have the machine. I have an apprenticeship as an electrician and one as a measurement and control technician. I also have a degree in electrical engineering. And I have not found out how to set the washing machine to German. If you or someone else finds out, please write. Or: Dear questioner: If you have seen Youtube videos about this, please include the link. Is it really exactly the same model except for the last point?