Ensure that your watch and the Noisefit app are fully updated & you have connected your ColorFit PRO 3 to your phone properly. Check that the watch is firmly attached to your wrist.

Check that you have enabled Notifications in the Noisefit app. To do this, open the NoiseFit app, go to Settings. Select colorfit pro 3. select Notifications & alerts .

Then select the apps that you want to receive notifications from.

Make sure you give notification access to noisefit 

Check whether you have enabled No Disturb. If this mode is enabled, new notifications will not be displayed on your wearable devices. To check whether you have enabled No Disturb, swipe up on the home screen of your watch. Check wether DND is enabled if so please disable the same.

If you still not receive notification please lock your app in the background or white list the app from the recently used apps list

Note: Your watch can only remind you of notifications that are displayed on the status bar.

Restart your phone if you still encounter this issue after connecting your wearable device to other Android phones and adding the NoiseFit app to the protected background app list. If this issue still cannot be solved, this is an issue caused by your phone's manufacturer. The NoiseFit app is not an app developed by those manufactures, so it will be cleared from the background app list when the phone's power consumption is high.