Objects rotate when i try to make a prefab

So i dont really know where to put it correctly but I am trying to make a prefab from an object I made in blender… i imported it into unity and its all going correctly. but when I drag the objects into a parent object they all twist but the box collider is still intact… here are the screens

BEFORE:

AFTER:

Iam not the greatest in this. Can someone explain me what to do. I am trying to figure this out for an few hours now. Kind regards Ruben

Does the parent have non-uniform scaling? That is, a scale value where the x, y, and z values are not the same? If so, than can explain it. It’s not a good idea to have children under non-uniformly scaled parent objects.

They are the same. This is what I got straight out of blender. The problem is still not fixed and I just copy the items separately and paste them back in

It is an regular FBX file and everything works fine after importing