Help & troubleshooting
Common questions and step-by-step fixes.
Alarms & alerts
Why didn't a low glucose alarm call me?
A low happened but your phone never rang — work through this top to bottom.
CGM & sensors
Libre says “No Data” (or connects but never shows readings)
Your FreeStyle Libre is linked but Sugalarm shows No Data — almost always a LibreLinkUp sharing setup.
No articles match your search. Try fewer or different words.