Sense didn't track GPS distance accurately

[AnnaMaeJ]

My 1 mile loop was tracked correctly by GPS (exercise - walking) on the map, but it looks like Fitbit is calculating the distance ‘as the crow flies’ (straight line across) instead of as a square loop (actual distance walked).  So my 1 mile loop is showing up as 0.32 miles.  How can I fix this?  It used to work correctly.

Moderator Edit: Clarified subject

[Rich_Laue]

Hi @AnnaMaeJ does the gps show a map of your walk, or a straight line? 

[AnnaMaeJ]

Hi Rich,  The map looks accurate (a 1 mile square loop).  In the past, mileage was reported correctly (1 mile).  Now, the map loop looks the same (square), but the distance reported says 0.32 mi.