An issue was reported, that affected all Garmin Connect users, where their User Settings would not save or would randomly revert back to the default settings (example 24 hour back to 12 hour time format).
This issue has been resolved with a Garmin Connect update that was pushed out yesterday afternoon (Central Time).
The fix should prevent users settings from switching back to the default settings and cause devices to change time or distance formats.
We recommend users check their users settings in Garmin Connect/Garmin Connect Mobile to ensure they are correct.
We appreciate all of the discussion in the forums regarding this issue, and apologize for any inconvenience.