How to retarget UE4 mannequin animations to mixamo character in UE5

I’m trying to retarget some animations from Animation Starter Pack Animation Starter pack to a mixamo character. I’m having trouble with it retargeting correctly.



This is my first time retargeting so I’m not sure what I should check for what’s wrong.

Here are some more images of my setup



I think there might be a bug because setting the source and target to the same rig is broken.
EDIT: oops forgot the left arm! Left leg still doesn’t work