Is this lens supported with X5S?
I get it from DJI reseller, and it seems to me that at maximum zoom, AF is not working correctly!?
I put 6g balancing ring on it.
I must use finger to set AF point, shoudn't be that automatticaly?

You need to tell the camera what to focus on, by tapping somewhere on the screen in Auto focus or by using the slider in Manual focus. This you have to do on all lenses on the Inspire 2, no auto focus on this camera.

Sorry that this lens is not in out compatible list.
But for AF(Auto Focus), you will still need to tap the screen to focus the object.