To address the issue of Messenger not working on your GloryFit device, follow these systematic steps:

1. Check App Permissions: Ensure that the GloryFit app has the necessary permissions on your phone.
- Go to your phone's Settings.
- Find Apps or Application Manager.
- Locate GloryFit and select it.
- Go to Permissions and ensure that permissions related to notifications are enabled.

2. Reinstall Messenger: If there are still issues with receiving notifications, consider reinstalling the Messenger app.
- First, uninstall the Messenger app from your device.
- Reinstall it from the official app store (Google Play Store or App Store).
- Log back in and check if notifications come through to your GloryFit device now.

3. Restart Devices: Sometimes, a simple reboot can resolve connectivity issues.
- Restart your phone.
- If it’s safe to do so, restart your GloryFit watch as well.

4. Update Apps and Device Firmware: Ensure that both the Messenger app and the GloryFit app are updated to the latest versions available.
- Check for updates in the respective app stores.
- For GloryFit, also check if the watch firmware has any pending updates through the GloryFit app.

5. Check Notification Settings: Make sure that notifications for Messenger are enabled in your phone settings.
- Go to Settings > Notifications.
- Find Messenger and make sure notifications are allowed and set to show on all screens.

6. Try Alternate Fixes: Some users have reported success by clearing the cache of the GloryFit app.
- Go to Settings > Apps > GloryFit > Storage.
- Tap on Clear Cache and potentially Clear Data (note this may reset some configurations).

If none of these steps resolve the issue, further troubleshooting may be required, such as checking forums for similar experiences or consulting the device's support directly.

For more detailed guidance regarding text messaging on GloryFit, you can refer to specific resources like this guide on TikTok - [learn more].