itch.io

Hi everyone ! I am desperately trying to import an asset in .obj format into my Flowscape map, but whatever I do, it still miss the textures. The asset appears all grey. When I open it with any other software, the texture are there. The .obj file is in the same directory as the textures, and the .mtl text file indicates the good file for each texture. I don't understand. Can you please help me ?