Hey, I could solve it - but only a part of them!
Go to Backend->System -> Manage ->Extensions
Search "Page".
All Page Builder Extensions are listed.
Now you can see: The following Items are deactivated:
- *** Content - SP Page Builder
-
-
- Smart Search - SP Page Builder**
I ACTVATED them - voila! ! Now I have Acess to the Layouts/ Blocks etc.!
BUT: I cannot import them - "false license" !!!
:-(
SO, I deinstalled SP Pagebuilder 4, an installed the old version.
Not satisfied, friends from JoomShaper. Not good.