Chery Tiggo 7pro gearbox failure warning, engine light and EPC light on.

My Chery Tiggo 7pro engine light is on, EPC light is on and a gearbox failure warning is on. I took the car to Chey Polokwane 4 times in 3 weeks and got a breakdown 2 on the side of the road and the workshop says they don't see anything wrong with my car. They ran some test and gave the car a clean bill of health. The car is jerking and looses power while driving. Struggling to get it started in the morning. I went as far as replacing the battery as well but it didnt help.Frustrated and don't know what to do.