When you see NO DATA (three dashed lines), it means the service you’re connected to hasn’t reported any glucose readings to sugardash in the last 10 minutes.

The most common reason is that the phone paired to the CGM has either:

• lost connection with the sensor itself,
• lost its internet connection,
• or both.

Dexcom users

• First check the Dexcom Follow app. If it’s showing fresh readings, sugardash should too.
• If the Follow app isn’t showing data, go to Dexcom Clarity > Reports > Daily and confirm that today shows a graph with recent readings.
• If you have multiple Dexcom accounts (common for dependents), make sure you’re logged in with the account tied to your CGM in the app.
• ⚠️ If your account doesn’t have at least one follower, you won’t see an error message—sugardash will just show NO DATA. You can fix this by inviting yourself as a follower under Dexcom app > Connections > Share > Invite Follower.

Libre users

• Open the Libre Link Up app and check that recent readings (within the last 10 minutes) are visible.
• If Link Up isn’t showing current data, sugardash won’t either.

Occasional service outages

While rare, Dexcom Share and Libre Link Up can have temporary outages. You can confirm by checking their official websites, social media, or simply by seeing whether the Follow apps (Dexcom Follow or Libre Link Up) are showing data.

👉 Important reminder: sugardash can only display the data provided by your CGM service. If your CGM app or service isn’t reporting fresh data, sugardash has nothing it can show—even if we wanted to fix it for you, the issue is entirely on the CGM/service side. Please resolve any data gaps there first.

If you see a No Wi-Fi message, it usually means sugardash can’t connect to your network. The most common reasons are:

• The Wi-Fi signal is too weak where the device is placed.
• The network itself is down or not working properly.
• The Wi-Fi password or network name has been changed (less common).
  

Tips to try:

• Move sugardash closer to your Wi-Fi router.
• Double-check the Wi-Fi password in Settings > Wi-Fi.
• Restart your router if other devices are also having trouble.
• If you recently changed your Wi-Fi name or password, update it in sugardash settings.

If you see a login failure, it means the username or password you entered is not correct. If the login fails, it is definitely because the credentials don’t match what your CGM service expects.

This is more common than you might think, especially if you manage multiple accounts (Dexcom users in particular sometimes have more than one login, or dependent accounts).

To resolve this, double-check your details and follow the steps on our Setup page for instructions on how to verify the correct username and password with your CGM service.