Blender to unity texture problem

I have an asset that i bought that is textured properly in blender but doesnt texture properly in unity. They are both using the same image for the texture.

note i have 0 idea about anything to do with blender

blender images
back of shield
https://imgur.com/VMU2TMk


front of shield

https://imgur.com/JWcMDm9

unity images
back of shield
https://imgur.com/Jj1LcrU


front of shield
https://imgur.com/nQBru8g


please help it is driving me insane

 

This is called "flipped normals" and is actually the common problem of all 3d software. Be mindful of using mirroring during modeling. When the model is mirrored in 3d editor, it gains a scale multiplier of minus one. Exporters usually clear this negative scale transformation, leaving it as 1.0, so the mesh turns inside out. So, before exporting anything, good practice is to apply transformations (Ctrl + A on Object level - Apply Scale and Rotation), check if normals flipped as result (Backface Cull should be enabled in Edit mode to see), and in that case flip them correct way in Edit mode.