phantom3 connection error

[frankleeuse]

[2244693.484]STATUS/1 @ functionalSetUp, L282: Shake hand with drone Fail ! Cannot get drone version. (12/20)
[2244693.484]STATUS/1 @ functionalSetUp, L284: Try again after 1 second ......
[2244695.839]STATUS/1 @ getDroneVersion, L1702: ret = 2
[2244695.839]ERRORLOG/1 @ getDroneVersion, L1707: Drone version not obtained! Please do not proceed.
Possible reasons:
Serial port connection:
* SDK is not enabled, please check DJI Assistant2 -> SDK -> [v] Enable API Control.
* Baudrate is not correct, please double-check from DJI Assistant2 -> SDK -> baudrate.
* TX and RX pins are invert
[2244695.839]STATUS/1 @ functionalSetUp, L282: Shake hand with drone Fail ! Cannot get drone version. (13/20)
[2244695.839]STATUS/1 @ functionalSetUp, L284: Try again after 1 second ......

i can't find out DJI Assistant 2 for phantom3 app in woindows