Hi there! I'm really sorry to hear that the Dexcom G7 app isn't staying open for you—it can be quite frustrating. Let's work through this together.

First, could you let me know if you've recently updated the app or your device's operating system? Sometimes, updates can cause temporary issues like this.

Here are some steps we can try to resolve this:

1. Restart Your Device: A simple restart can often clear out any temporary glitches. Please hold down the power button and select the option to restart.

2. Clear App Cache:
- Go to your device's Settings.
- Tap on Apps & notifications or just Apps depending on your device.
- Find and select the Dexcom G7 app.
- Tap on Storage & cache, then tap Clear Cache.

3. Check for Updates:
- Open the Google Play Store, and search for the Dexcom G7 app.
- If an update is available, please install it.

4. Reinstall the App:
- Long press the Dexcom G7 app icon and select Uninstall.
- After that, go back to the Google Play Store and reinstall the app.
- This will help if there are any corrupt files.

5. Review Permissions: Sometimes, the app needs certain permissions to function correctly.
- In the App settings, check if the Dexcom G7 app has the necessary permissions enabled (like location, storage).

If none of these steps work, we might need to look into deeper troubleshooting, and I’d be happy to assist with that too. You can also reach out to higher-level support at [email protected] if the issue persists.

Are you able to try these steps, and let me know how it goes? I'm here to help!