Follow the steps from this comment:
Thanks! I have never heard of "s mode" and had no idea! Microsoft Big Brother strikes again!
What happens if you click on the link at the bottom of the notification? Does it bring you to Settings/Notifications and Get notifications from apps and senders, as well as scrolling down to Microsoft Store banners and sounds to disable those?
All Bitdefender Home Product User Guides:https://www.bitdefender.com/consumer/support/user-guides/