I believe it's because I use the CT10 sensors, but i only use the 3 pack on my wedges and putter, so I don't get why I can't manually enter this info when scoring now. Fairways and putts are easy enough to correct after I save the scorecard (though it is annoying), but there is no way to add penalties after the fact.
If it matters, I use the Venu 2s and I do have stat tracking on.