Issues with Mixamo animation being invincible

So, I’ve imported in blender an animation with skin from mixamo (with a model of mine), edited the mesh so I can keep just the arms (for a first person), then exported and imported it (mesh and armature) in Unreal (v. 4.27) but the animation seems to be invincible.

When I check the force root lock in asset details, the animation becomes visible but it seems a little offset.

What Am I doing wrong here? Export settings from blender are done properly.

Thanks for any help.

invincible or invisible?