Having problems applying Textures to my Model

Hello, i’m quite new to Ue4 and im having some problems with my meshes
I modeled a wall in blender for a small Project and bla bla bla, imported it with no textures into ue4 since im not a big fan of texturing in blender and…
i stumbled into a problem, when i tried to apply some of my textures to my wall in ue4 – i’ve noticed that it wasn’t mapped properly here are the examples :

( i’ve placed a cube next to my wall as a reference so you can see the difference )

Thanks in adavance…