Golf Pad Support

Hi, Can you explain why do some shots not track/score on Stroked gained? I just did a data export, and of the 4794 shots recorded just under 300 are blank cells in the strokes gained column and, when i look at the playing history. It's seems to be quite random - quite a few are 0" putts which is understandable, but there are a decent number of regular tee/rough/fairway shots with distances tracked, as well as non zero-length putts too Would be great to know why (and how to fix if possible) Thanks David