Imported mesh rig issue

I’m trying to perfectly import my model from blender but the results are not satisfactory…



The meshes that are not apart of the main body are connected to the bones of the rig- but it doesn’t seem to transfer? It’s an FBX model.
https://gyazo.com/6c2ce0a0c96431bc24eee02a9f8f44da

Alternately this is the better method that Roblox likes