Start here: make sure your SugarPixel+ has the latest software installed. Install any update you’ve been notified about, and check your version under ≡ → General Settings → System.
1
Check the No Data alert
The No Data alert fires when no new reading arrives within the time you set, even if glucose is in range. CGM readings sometimes arrive a few minutes late, so a short No Data time can alert when only a few readings are missed or delayed.Go to ≡ → Users → [User Name] → User Alerts and check the No Data time. 30 minutes works well for most people.
2
Snooze it, then check which alert it was
Next time it alerts, snooze it and open ≡ → Snoozer. The new snooze shows which alert fired — Low, High or No Data — and for which user.
3
Check alert settings
Go to ≡ → Users → [User Name] → User Alerts and confirm the Low and High thresholds are what you intended. Each user has their own alert settings.System Alerts under ≡ → Global Alert Settings → System Alerts (Power Loss and Captive Portal) can also fire on their own.