Broken mesh and texture when uploading to roblox

[ArastooYsf86 (ArastooYsf)]

Hi!
So I made a hazmat suit (it’s not complete yet, I just made the helmet)
And when I upload it to studio, it will break
Let me show you:

blender:

Substance Painter:

And I also re-export the mesh from Substance Painter…
What is going on here?

Studio: (sb is the reexported from substance painter)

[MineTourist]

Seems like your scaling is off for the engine. Its very likely that the mesh is correct but due to the distance you are looking at it, and because it is so big, Roblox approximates the mesh. Try exporting it at 0.01 scale and looking at it from closer.