Help with creating a SWSH mod

[MysticLunar]

Ok so I managed to fix some issues regarding this model, but it currently have a weird texture issue that I'm not sure why that happens, even if the UV is working properly in the 3D modelling program. The textures of the model looks messed up in Switch Toolbox, but it looks just fine on both Blender and 3ds Max, including the UV when I try to see them on both 3D modelling program. If someone have way more experience with Pokémon skin modding than me and by any chance wants to help, this is the model for the mod (I've included the .gfpak as well):

 

Model.zip