Q3DC does not work properly

Problem report for Slicer 4.10.2 macosx-amd64: [please describe expected and actual behavior]
The fudicial I put on the sample is not fixed. I keeps moving even though I don’t choose any fudicial in “selected landmarks” Also, the landmark is not on surface even though I check “on surface” box.
I’ve already tried uninstalled Slicer and Q3DC, but the problem stayed the same.