BYD Dolphin Surf automatic wiper not working

So i put the wiper to the most downward position and the click to Automatic. The same with the automatic light. The thing is that the automatic light works perfectly, but whatever i do , i cant get the automatic wiper to function. I cleaned the sensor from the outside, i literally tried everything but i still get a soaking wet windshield in rain but no functioning wiper until i handle it myself. What can i do now? :)