Other than that, you can try blocking notifications from the app by long - pressing the notification, then tapping the «i» button. (android.gadgethacks.com)
In - app notifications, you get app controls, and you can set an app as a priority so you always get notifications from that app, including in do not disturb mode. (pocket-lint.com)
Be sure to open it at least once so you will receive notifications from the app on important news and announcements. (blogs.windows.com)