BMW M6 Light problems

Servus miteinand, I bought a BMW M6 e63 bj 07 with facelift conversion which initially the blinker left front did not work. I bought the turn signal new from BMW and it still didn’t work. With time almost every light started to cause problems that means with daytime driving light only the blinker left lit, with blinker left flashing only the daytime driving light, with blinker right blinking blinker and daytime driving light. Finally I have on a mistake of the light module g The lights work and the control unit is new. What else could I try? To the car: M6 e63 2007 US import due to accident damage Facelift remodeling where everything must have worked since it was approved in Austria. Light module: LM 2 AHL