UE4.22 can not enable Datasmith

Thanks for anyone’s help.

The problem is that I can’t select buttons of Datasmith in UE4.22. Every one of button is grey(Datasmith Importer and others).

The only one bright button is Datasmith content.
I checked launcher → library → installed plugins, which shows that I install Unreal Datasmith in deed.(I can see number of Datasmith buttons in UE4 editor → plugins, like I mentioned above)