Why is the Apps icon missing on the home screen?

[roberthook]

I use apps to play music on my Android phone, but recently when I turn on the music, it doesn't show the app's icon, making it difficult for me to stop the music in an emergency. Don't know for what reason? Has anyone known something about that? Please share with me.

[Lowlander]

Check in Options in MMA that you still allow for the notification to be shown.