Blender Mesh Won't Import Properly

[TmsDevv (Tms)]

I have having a weird glitch where a model I made won’t import into Studio properly. It has a weird glitch:
In Studio:

In Blender:

How do I fix this?!

[mutrix]

Its because face normals are looking the wrong way
Go to blender
Select this icon:

Then select

Now you can see the normals, blue = okay for you, red = inverted, select the red parts go to mesh - normals - flip =

In case everything is red then Go to edit mode, select everything with A and then F3 For searching and write down “Recalculate Normals”