Razer Tartarus V2 manual wanted

I got myself a Razer Tartarus V2 Keypad. I opened the packaging with curiosity. Unpacked the pad and looked for a manual. I also found one that is responsible for setting the colors. Nothing was included for programming the buttons. Can anybody help me further? If possible in German. I thank you in advance

I googled it for you

There’s a German PDF Download on that site

Thanks for the link

60 seconds of googling.