Hyperpixel 4.0, only Touch input works

Hi, i have a Hyperpixel 4.0 touchscreen. I try to connect the touchscreen not directly to my raspberry pi, but with a few meters distance. This means, i have a 40-Pin GPIO cable, which connects my Raspberry pi with the touchscreen.

Unfortunately, only the touch and the i2c breakout works, but at the actual distance of around 3.5 meters i dont get any picture. I remounted the touchscreen directly to the raspberry and everything works fine. So i asked myself, why it does not work over the above called distance. i dont get any clue. hopefully, someone can help me.