I have a problem on my DRTK2. It fell while it was on and after that the fan died. But so far it still functions well even though it has to be cooled immediately after use. I'm from Indonesia and to repair it to the distributor I need a serial number as a report requirement to the DJI principal. The problem is that this product has been purchased since October 2021 and the sticker on the device has been lost/erased. Is there another way to get the serial number on DRTK2?