> ## Documentation Index
> Fetch the complete documentation index at: https://support.customtypeone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Dexcom: CGM Login Error

> SugarPixel Mini/Classic cannot log in to your Dexcom account

<Info>
  **Start here:** make sure the SugarPixel app is up to date in the App Store or Play Store, and that your SugarPixel Mini/Classic has the latest firmware installed. See [Firmware Update](/sugarpixel-mini-classic/firmware-update).
</Info>

A login error means the username or password entered in SugarPixel Mini/Classic doesn't match what Dexcom has on file. The most common causes:

### Phone number username

The **+** and country code are required — no spaces, dashes, or parentheses. Enter exactly as shown in the Dexcom app. Example: **+13334445555**

### Dependent account

If the Dexcom app shows a dependent account username, you must use that username — not the caregiver login. The dependent account also has its own password (set when the account was created), not the caregiver's password.

### Verify your login first

Before re-entering details in SugarPixel Mini/Classic, confirm your login works on the Dexcom website:

* **USA:** [clarity.dexcom.com](https://clarity.dexcom.com)
* **Outside USA:** [clarity.dexcom.eu](https://clarity.dexcom.eu)

If you can't log in there, SugarPixel Mini/Classic won't be able to connect. Reset your password on the Dexcom site if needed — for dependent accounts, enter the dependent username and the reset email goes to the caregiver's address.

Once you've confirmed your login works on the website, tap **Clear CGM** in SugarPixel Mini/Classic and re-enter your details.


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