i bought 2 weeks ago dji mini 3 pro and because of accident need to replace propellers, i changed 3 o of them , but last 4th is terrible i cant unscrew it was screw by factory that strong that i put presure  and still can`t do it, so now that phillips screw is round and screwdriver just spinning around inside of it, and i can`t replace the propeller... dissapoint with that a lot...

Hi there. Thank you for reaching out and we're sorry for the inconvenience. In this kind of situation, I'm afraid that you may consider sending the unit in for proper checking. You may submit an online repair request through this link: {https://repair.dji.com/repair/index}. If you need assistance with creating a ticket, you may contact DJI support at (https://www.dji.com/support). We understand that this is not the answer that you look forward to, but this would be the best thing to do in this situation. In addition, warranty service can be claimed depending on the result of the Damage Assessment. Your kind understanding is appreciated and thank you for your continued support.