This issue relates to a permission that has to be removed in your settings
Follow these steps to resolve the issue:
Open Settings: Locate the "Settings" app on your phone.
Find App Settings: Scroll down and select "Apps" or "Applications" from the menu.
Access App Activity Settings: Look for an option labeled "Pause app activity if unused" or similar.
Disable the Setting: Toggle off this option to ensure that your app remains active and can send you notifications.
After making this adjustment, you should start receiving notifications for messages without any issues 🎉
If you have any further questions or need additional assistance, feel free to reach out! 👋