Heart rate is unavailable
Wear Apple Watch snugly above the wrist bone. Confirm ZoneCue can read Heart Rate in Health settings. Pause safely if needed; ZoneCue will wait for a fresh valid signal.
Support
Get back to a clear cue.
Start with the focused checks below. ZoneCue keeps troubleshooting local and does not collect a support form submission.
Another workout is active
Apple Watch allows one active workout app at a time. End the other workout, return to ZoneCue, and start again.
I cannot hear cues
Check Audio Cues in iPhone settings, Watch volume, Silent Mode, and your current audio route. Haptics remain independent, and cue failure does not stop the workout.
Subscription is not recognized
On iPhone, choose Restore Purchases. Then bring the Watch online, open ZoneCue, and use Refresh so the Watch can complete its own StoreKit verification.
Symptoms during exercise?
Stop exercising and seek appropriate professional or emergency help. ZoneCue is a fitness tool, not medical advice, diagnosis, or emergency monitoring.