A. 1. Check notification settings: Go to Settings > Notifications > CollX and ensure that notifications are enabled. Adjust the alert style and sounds as needed. 2. Restart the app: Close the app completely and reopen it to refresh the notification system. 3. Reinstall the app: If notifications are still inconsistent, try deleting and reinstalling the app to reset its notification settings.

B. 4. Check Do Not Disturb settings: Ensure that Do Not Disturb is not enabled on your iPhone, as this can prevent notifications from appearing.