>>336117980
>missing parts
Then you are importing an SDK2 avatar directly. Don't do this. You need to import the model .fbx and set up the avatar descriptor on it, as in the video. This is very similar to SDK2 but the descriptor is different.
>missing textures
fucked materials, you need to import the textures and set up materials for them too. This is the same as SDK2 again.

That said this is the last spoonfeeding I'll do for a fucking troglodyte. This literally will take you less than 20 minutes to do after watching maybe 20 minutes of tutorials. If you don't want to learn then I guess you'll be at the mercy of public avatar creators, enjoy!