Having problems with the courier app on your Android smartphone? Here’s a handy checklist and guide to help you get back online and receiving delivery invitations.
Quick Checklist - check these first!
Ensure your Notification Volume is turned up
Ensure battery / power-saving mode is off and any aggressive battery/data optimisations are disabled.
Check your network connection
Switch to a stable mobile or Wi-Fi network (and avoid weak/unstable Wi-Fi).
Log out and log back in to the courier app.
Check that your device settings do not restrict background data for the Stuart app (and, if applicable, for Google Services on your phone).
If problems persist: delete and reinstall the app from the Play Store.
Fixing Notification Issues
If you’re not receiving delivery invitations or push notifications, follow these steps.
Go to Settings → Data Usage → Stuart app → ensure “Restrict background data” is unchecked. Repeat for Google Services if needed.
Under Wi-Fi settings → Advanced → set “Keep Wi-Fi on during sleep” to “Always” — this helps maintain connection while the phone is locked.
Disable any battery-saving features, adaptive battery or data-saver settings that might limit background syncs.
If your phone manufacturer uses aggressive background-app optimisations (some Samsung, Xiaomi, etc.), make sure the Stuart app is whitelisted/excluded from sleep lists.
Avoid force-closing the app - background sync and push notifications stop until you re-open it.
Other Recommended Steps
If you still have trouble after checking the above, you can try to:
Force-quit then re-open the app to refresh its background connection.
Ensure the app is updated to the latest version (you can check this on Google Play Store).
Try switching between Wi-Fi and mobile data - some Wi-Fi networks or public Wi-Fi may block or delay delivery.
Check that your phone has enough free storage and isn’t under heavy system load. Low resources can prevent background processes from running reliably.
If problems continue: log out and log back in - or uninstall and reinstall the app. This can resolve corrupted app state or misconfigured permissions.
❓ FAQ
Why am I not receiving delivery invitations?
This is almost always caused by notifications being blocked or background data being restricted. Check the “Quick Checklist” and “Fixing Notification Issues” sections for the most common fixes.
Why does the app go offline when my screen is locked?
Your phone may be putting the Stuart app to sleep to save battery. Disable battery-saving features and ensure the app is excluded from any optimisation/sleep lists.
Why are notifications delayed?
This usually happens when Wi-Fi disconnects during sleep or when data-saver mode is active. Make sure Wi-Fi stays on during sleep and that Data Saver is turned off.
Can task-killer apps affect the Stuart app?
Yes. Any app that automatically closes background processes can prevent notifications from arriving. Remove or disable these apps to avoid issues.
I’ve tried everything - what next?
Log out and back in, or reinstall the app. If issues continue, contact Support for further help.