Your runs and Apple Health
My COROS runs aren't showing up
A run recorded on a COROS watch reaches Why Not through Apple Health. The COROS app writes the run to Apple Health after your watch syncs with it, so a run shows up once the COROS app syncs.
Open the COROS app, let it finish syncing, then open Why Not again. If runs never arrive, turn on Apple Health in the COROS app and allow workouts.
COROS app, Profile, Settings, 3rd Party Apps, Data Sync, Apple Health: turn it on and allow Workouts.