Unreal Studio does not install properly

I already reinstalled it. deleting everything including the launcher. but nothing changes

Substance Plugin is not shown, Datasmith is shown as not installed but already is.

In the Pluginspanel in a Project it is installed but how should i activate it?

I already reinstalled it. deleting everything including the launcher.

What should i do and where ist The Substance Plugin? Please help!

Thx