No Textures for Fir and Canopy

The textures are in a folder in the folder of my trees (its all the same like in “Game/PrimalEarth/Environment/Snow/Environment/Vegetation/Trees/”)
Or what do you mean?

How can I recompile the map?
I thought, this is only available in blueprints…
Do I need a blueprint to add the canopys as foliage?