Turn on Samsung Phone Notification Settings

How to configure your notifications:
  1. Navigate to your phone’s Instellingen > Notifications > Apps Notifications > Turn on JusTalk-familie
  2. Navigate to your phone’s Instellingen > Battery > Background usage limits > Never auto sleeping apps > Select JusTalk-familie
  3. Enter background mode > Tap on JusTalk-familie icon > Select Keep open
If the above steps still do not work, you can follow the steps below
Open Good Lock > Tap on MultiStar > Turn on Multi Focus > JusTalk-familie
Follow the steps above and you will be notified when you receive a message.