Excellent package, congratulations. There is a problem with the skeleton, Mixamo does not accept it to animate, it gives an error when trying to place the bones. Would there be another version of it to make available? Thank you very much.
I tried uploading it and some fbx,obj versions including one with different y,x,z coordinates and I get also two errors in Mixamo. I tested Mixamo with another human design I have and it worked...must be something with the skeleton that I don't know what it is. Transforms are all ok scale1 and rotation0, normals are ok too so I have no clue to what it can be. the test was with a design that also has thin limbs like the skeleton...Sorry!