OK, so I imported some of my vegetation I created great it imported the textures as well until I saved the scene and turned off my computer, the next day all the textures are not on any of the imported models now, this is so frustrating even tried to create a new project and reimport them and now it seems to have messed everything up…
-are you 100% sure that you have saved everything?
-are they just not displayed on the mesh or are they missing in your content folder?
-can you see any errors in your material?
-have you moved some content or folders?
-which 3d program do you use for your meshes?
-I personally would recommend you to import the textures manually, as you always have to create a material (then you can create your own material straight from the beginning)