We just opened our drone and we get a message "lens not connected". I contacted DJI and they suggested IMU and gimbal calibration which I did, then restarted the drone and we still get the same message. Any suggestions on how to fix this or do you think it is a hardware issue and drone needs to be replaced/repaired? Seems like all repairs are made in Germany since we are in Europe and the shipping cost must be covered by the consumer. Appreciate any feedback. Thanks!!