The StarterGui is not setting the GUIs inside automatically to the PlayerGui.
This happend after i setted Archivable to false and published it.
After i opened my Game again i saw Archivable was true again. The Archivable is never changing, its always true, but that bugged all my Containers, where i closed Archivable, its true but nothing will work there again.
I cant make this to Bugg Report, so i write it here.