So DJI has change his policy and can't do raw license transfer to another spare (because of landing gear are stuck)  if the i2 is not in a repair centre.  So we have to pay and wait for something is can do in one hour.  And the support told me first that it was impossible to transfer licence if they don't hve the drone....nice lie! I did it 2 times last years with no worry and now i have to pay for a new one or send my i2 for a long time...THANKS DJI, nice customer services!

License Key is a certificate file to be written into the flight controller. After activation, it will be bound to the aircraft and cannot be transferred. You mentioned you have transferred license twice last years, may we have the case numbers?