I have issues when import ".AxF" on UnrealStudio v4.20.2

I have issues now. That is unable to import “.AxF” but I able to use basically Datasmith system(import cad etc).
When I tried to import “.Axf” Ue4 had given this message(check out my pictures).



I found a solution but I guess this website situation’s doesn’t the same problem.
That website is here.

(I can use Datasmith but I can’t only use “.AxF” import.)

Could someone please tell me how we can fix that situation?
Thank you.

I figure out point.
We need a license of Unreal studio if you want to use import Axf format.