Glucose is not updating or looks stale

If your glucose timeline on Insights stops moving or is marked stale, it is almost always a sync issue rather than a fault with Bolus.

First, the normal explanations

• Dexcom runs about three hours behind through Apple Health. A gap at the most recent end of the chart is expected, not a problem.
• Bolus marks data stale when it has not seen a new reading for a while, sooner for Dexcom than for Libre. A fresh reading clears it on its own, so it often fixes itself once your phone and monitor catch up.

If it asks you to reconnect

A reconnect banner means the connection dropped, usually because the login needs refreshing:

• FreeStyle Libre: re-enter your LibreLinkUp login in Settings. If it keeps failing, open a Libre app once to check the account and accept any new terms.
• Dexcom: check the Dexcom app is still writing to Apple Health, and that Bolus still has permission to read Blood Glucose in the Health app.

There is a full walkthrough in fix a CGM that needs reconnecting.

Still not syncing

If it will not reconnect, or drops out again straight away, email support@bolus.health and tell us which monitor you use.