Dash not working, no lights nothing, won't shift into gear, will start right up though

My car engine was faulty and i did changed it, three days while driving with the new engine the car suddenly stopped at the middle of the road. With the help of other drivers we pushed the car to the… 

The car Cranks but not starting... It happens when driving to work

My sportive doesn’t recognize the key and is now killing the fuel and spark. It turns on and turns over but won’t start even after relearning the key any ideas??

I asked the,question above