Troubleshooting Secondary Glucose Displays

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Safety note: Secondary displays are supplemental. Always rely on your primary CGM app/device for treatment decisions and alerts.

Using Glucose Display?

Here’s exactly what to do to connect it. Go to the product page.

Last updated: Feb 2026

Most common issues

No data

  • Confirm the primary CGM app shows current readings.
  • Confirm sharing is enabled and a follower/connection exists.
  • Confirm the device has internet and background data allowed.
  • See provider-specific steps: Dexcom, FreeStyle Libre, Nightscout.

Delayed readings

  • Check phone internet + background data permissions.
  • Confirm device time/timezone are correct.
  • Try a different network (cell hotspot) to rule out Wi‑Fi blocks.

Login rejected

  • Confirm credentials work on the provider’s website.
  • For Dexcom, use the primary account (not a follower).
  • For Libre, use the LibreLinkUp follower account (same region).

School/work Wi‑Fi blocks data

  • Restrictive networks can block real‑time data.
  • Test on a personal hotspot to isolate the issue.

Still stuck? We can help.

Contact support at our support page and include: source, symptom, phone OS, network type, and a screenshot if possible.

Disclaimer

This content is educational and for device setup support. It’s not medical advice. Always follow your CGM manufacturer’s instructions and rely on primary CGM alerts and guidance for treatment decisions.