There are several reasons you may not receive expected notifications. In your Follow app: Check your Sharer’s glucose notifications. Turn on the ones you want. Check each notification’s delay setting. If a delay is set, you’re only notified if the condition lasts longer than the delay. Check your Sharer’s status. If you see No Data, Disconnected, Not Sharing, or Removed by Sharer you won’t receive notifications. Ask your Sharer if you have questions. Other issues: Check that you have an Internet connection. Open settings, then notifications. Find Follow in the app list and turn on notifications. Dexcom’s server may be down. If you continue to experience issues, contact your local Dexcom representative.