Automatic Wheel Generation: Unreal, Blender - How does it work?

Hi,

I am fairly new to Unreal, please be kind. I have been using:

to setup a blueprint of a robot, that is supposed to drive skid-steered (similar to a tank, but with only four wheels). It’s all fun and games, until:

Unreal seems to generate a wheel on the root bone. The vehicle is already flipped in this image. Weirdly on this attempt, Unreal does not seem to automatically detect the wheel bones, as it did last time, maybe it connects some dots for someone:

still having the same issue… i hope we will get help soon